JP3018118B2 - Manufacturing method of beam with large diameter opening - Google Patents
Manufacturing method of beam with large diameter openingInfo
- Publication number
- JP3018118B2 JP3018118B2 JP3173039A JP17303991A JP3018118B2 JP 3018118 B2 JP3018118 B2 JP 3018118B2 JP 3173039 A JP3173039 A JP 3173039A JP 17303991 A JP17303991 A JP 17303991A JP 3018118 B2 JP3018118 B2 JP 3018118B2
- Authority
- JP
- Japan
- Prior art keywords
- web
- rib plate
- longitudinal direction
- opening
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Rod-Shaped Construction Members (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この出願の発明は、梁成を大きく
せずに開口の口径を大きくしても梁の剛性、耐力、変形
能力等が低下しない大口径の開口のある梁の製造法に関
する。BACKGROUND OF THE INVENTION The invention of this application relates to a method of manufacturing a beam having a large-diameter opening which does not decrease the rigidity, proof stress, deformation capacity, etc. of the beam even if the diameter of the opening is increased without increasing the beam size. About.
【０００２】[0002]
【従来の技術】空調装置等のダクト、管、線等は、鋼製
梁のウェブの開口を通して、天井裏等に配設している。
従来の開口のある鋼製梁には、（イ）第２８図及び第２
９図に示すように、梁１のウェブ１ｂの円形の開口１ｃ
のある部分にリング状の補強プレート２を溶接ｗしたも
の、（ロ）第３０図及び第３１図に示すように、梁３の
ウェブ３ｂの円形の開口３ｃに、この開口３ｃの直径と
略同じ外径の短い円筒体の補強スリーブ４を嵌合して、
この補強スリーブ４をウェブ３ｂに溶接したもの等があ
る。2. Description of the Related Art Ducts, pipes, wires and the like of an air conditioner and the like are disposed at the back of a ceiling or the like through openings in steel beam webs.
Conventional steel beams with openings include (a) FIG. 28 and FIG.
As shown in FIG. 9, the circular opening 1c of the web 1b of the beam 1
A ring-shaped reinforcing plate 2 is welded w to a portion having a circle. (B) As shown in FIGS. 30 and 31, a circular opening 3c of a web 3b of a beam 3 is substantially the same as the diameter of the opening 3c. The reinforcing sleeve 4 of a short cylindrical body having the same outer diameter is fitted,
The reinforcing sleeve 4 is welded to the web 3b.
【０００３】[0003]
【発明が解決しようとする課題】前記（イ）及び（ロ）
の鋼製梁においては、次のような欠点がある。 （イ）の鋼製梁においては、円形の開口１ｃを大きくす
ると、開口１ｃの周囲とフランジ１ａの内側面との間隔
ｄ１が小さくなり、補強プレート２のリングの幅が小さ
くなり、補強プレート２を設ける意味がなくなるから、
円形の開口１ｃを大きくすることができない。また、円
形の開口１ｃを大きくしてゆくと、梁の剛性が低下し、
必要な耐力及び変形能力が確保できなくなる。 （ロ）の鋼製梁においては、円形の開口３ｃを大きく
し、かつ補強スリーブ４の外径を大きくすると、開口３
ｃの周囲とフランジ３ａの内側面との間隔ｄ２が小さく
なり、梁の剛性、耐力等が低下するから、円形の開口３
ｃの大きさを十分に大きくすることができない。また、
間隙ｄ２を小さくして、いっぱいに補強スリーブ４を配
置すると、補強スリーブ４のフランジ３ａへの溶接がむ
ずかしくなる。この出願の発明の解決しようとする課題
は、上記のような欠点を有しない大口径の開口のある梁
の製造法を提供すること、換言すると、梁成を大きくせ
ずに開口の口径を大きくでき、かつ製造が容易で、剛
性、耐力、変形能力等の低下をきたさない大口径の開口
のある梁の製造工程が単純化できて製造が容易な大口径
の開口のある梁の製造法を提供することにある。The above-mentioned (a) and (b)
The steel beam has the following disadvantages. In steel beams (b), increasing the circular opening 1c, distance d 1 between the inner surface of the periphery of the opening 1c and the flange 1a is reduced, the width of the ring reinforcement plate 2 is reduced, the reinforcing plate There is no point in providing 2.
The circular opening 1c cannot be enlarged. In addition, as the circular opening 1c increases, the rigidity of the beam decreases,
Necessary proof stress and deformation capacity cannot be secured. In the steel beam of (b), when the circular opening 3c is enlarged and the outer diameter of the reinforcing sleeve 4 is increased, the opening 3c is increased.
distance d 2 between the inner surface around the flange 3a of c is reduced, the rigidity of the beam, because proof stress and the like is reduced, circular opening 3
The size of c cannot be made sufficiently large. Also,
By reducing the gap d 2, when arranging the reinforcing sleeve 4 to fill the welding it becomes difficult to flange 3a of the reinforcing sleeve 4. The problem to be solved by the invention of this application is to provide a method for manufacturing a beam having a large-diameter opening that does not have the above-described disadvantages, in other words, to increase the diameter of the opening without increasing the beam size. A method of manufacturing a beam with a large-diameter opening that is easy to manufacture and easy to manufacture can simplify the manufacturing process of a beam with a large-diameter opening that does not reduce rigidity, proof stress, deformation capacity, etc. To provide.
【０００４】[0004]
【課題を解決するための手段】この出願の発明の大口径
の開口のある梁の製造法は、上下フランジと上下フラン
ジを連結するウェブとを備え、ウェブの部分に二つの大
口径の開口を近接して形成したＨ形断面の鋼製梁の製造
法において、鋼製梁に溶接するリブ板片として中央長リ
ブ板片、中央短リブ板片及び側方く字形リブ板片を用
い、中央長リブ板片はウェブに沿って梁の長手方向に対
して略４５゜傾斜して上下フランジ間に延在できるよう
に鋼板で形成され、中央短リブ板片はウェブの略中央か
ら梁の長手方向に対して略４５゜傾斜してフランジの内
側面にわたって延在できるように鋼板で形成され、側方
く字形リブ板片はその二つの辺がウェブの中央部から梁
の長手方向に対して略４５゜傾斜してフランジの内側面
にわたって延在できるように鋼板で形成され、その一方
の対角線がウェブの中央を通る梁の長手方向の線に一致
し、その他方の対角線が梁の長手方向に対して直角な線
に一致する四角形の４隅部を円弧にした略四角の開口又
は前記四角形の内接円と略等しい円形の開口をウェブに
梁の長手方向に間隔をおいて左と右の二つ設け、ウェブ
の一側の左右の開口の間の部分に、前記中央長リブ板片
を、左右の開口の周縁部から少々離して、これが梁の長
手方向に対して略４５゜傾斜しかつその板面がウェブ面
に対して略直角になるように、ウェブ面及び上下フラン
ジの内側面に溶接し、１対の中央短リブ板片を、左右の
開口の周縁部から少々離して、前記中央長リブ板片の中
央の上側及び下側から中央長リブ板片に対して略直角に
梁の長手方向に対して略４５゜上方及び下方に傾斜させ
かつそれらの板面がウェブ面に対して略直角になるよう
に、中央長リブ板片、ウェブ面及び上又は下フランジの
内側面に溶接して略Ｘ字型の中央リブ体を形成し、ウェ
ブの一側の左の開口の左側の部分に、側方く字形リブ板
片を、左の開口の周縁部から少々離して、その一方の辺
がウェブの中央部から梁の長手方向に対して略４５゜上
方に傾斜しその他方の辺がウェブの中央部から梁の長手
方向に対して略４５゜下方に傾斜しかつそれらの板面が
ウェブ面に対して略直角になるように、ウェブ面及び上
下フランジの内側面に溶接し、ウェブの一側の右の開口
の右側の部分に、側方く字形リブ板片を、右の開口の周
縁部から少々離して、その一方の辺がウェブの中央部か
ら梁の長手方向に対して略４５゜上方に傾斜しその他方
の辺がウェブの中央部から梁の長手方向に対して略４５
゜下方に傾斜しかつそれらの板面がウェブ面に対して略
直角になるように、ウェブ面及び上下フランジの内側面
に溶接し、ウェブの他側の左右の開口の間の部分に前記
と同じやり方で略Ｘ字型の中央リブ体を形成し、ウェブ
の他側の左の開口の左側及び右の開口の右側の部分に前
記と同じやり方で側方く字形リブ板片を溶接することを
特徴とするものである。Ｈ形断面の鋼製梁は、例えば、
Ｈ形鋼、Ｈ形組立鋼等で構成する。略四角形の開口は、
例えば、四角形の各角部をウェブ厚さの３倍程度（例え
ば、２０ｍｍないし４０ｍｍ）の半径の円弧部にする。A method of manufacturing a beam having a large-diameter opening according to the invention of the present application includes an upper and lower flange and a web connecting the upper and lower flanges, and two large-diameter openings are formed in a portion of the web. in the production process of the steel beams H-shaped cross-section formed close to, a medium as rib plate pieces welded to a steel beam Hisashichori
For use with slab plate, center short rib plate and side ribbed plate
There, the central length rib plate pieces is formed of a steel plate so that it can extend between the upper and lower flanges inclined approximately 45 degrees relative to the longitudinal direction of the beam along the web, the center short rib plate piece substantially from the middle of the web is formed of a steel plate so that it can extend I was I the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam, the side rather shaped rib plate piece from the center of the two sides web inclined approximately 45 degrees relative to the longitudinal direction of the beam is formed of a steel plate so that it can extend What was the inner surface <br/> garden flange, while
Diagonal coincides with the longitudinal line of the beam passing through the center of the web
And the other diagonal is perpendicular to the longitudinal direction of the beam
A square opening or a square with the four corners of a square corresponding to
Creates a circular opening approximately equal to the square inscribed circle on the web
Left and right two provided at intervals in the longitudinal direction of the beam, in the portion between the left and right openings on one side of the web, the center long rib plate piece, slightly away from the peripheral edge of the left and right openings, This is welded to the web surface and the inner surfaces of the upper and lower flanges so that the plate is inclined at an angle of approximately 45 ° with respect to the longitudinal direction of the beam and the plate surface is substantially perpendicular to the web surface. A little apart from the peripheral edges of the left and right openings, from the upper and lower sides of the center of the central long rib plate piece, approximately at right angles to the central long rib plate piece, approximately 45 ° above the longitudinal direction of the beam, and Central X-shaped central rib body welded to the central long rib plate piece, the web surface and the inner surface of the upper or lower flange so that it is inclined downward and their plate surfaces are substantially perpendicular to the web surface. The left side of the left opening on one side of the web, the side-shaped rib plate piece, the left opening Slightly away from the edge, one side is inclined approximately 45 ° upward from the center of the web with respect to the longitudinal direction of the beam, and the other side is inclined approximately 45 ° from the center of the web with respect to the longitudinal direction of the beam.溶 接 Weld to the web surface and the inner surfaces of the upper and lower flanges so that they are inclined downward and their plate surfaces are substantially perpendicular to the web surface. Separate the rectangular rib piece slightly from the periphery of the right opening, one side of which is inclined approximately 45 ° upward from the center of the web with respect to the longitudinal direction of the beam, and the other side of the web is About 45 from the center to the longitudinal direction of the beam
溶 接 Weld to the inner surfaces of the web surface and the upper and lower flanges so that they are inclined downward and their plate surfaces are substantially perpendicular to the web surface. Forming a substantially X-shaped central rib body in the same manner, and welding the side-shaped rib plate pieces to the left side of the left opening on the other side of the web and the right side of the right opening in the same manner as described above. It is characterized by the following. H-shaped steel beams are, for example,
It is composed of H-shaped steel, H-shaped assembled steel and the like. The substantially square opening is
For example, each corner of the square is formed into an arc having a radius of about three times the web thickness (for example, 20 mm to 40 mm).
【０００５】また、この発明の製造法では、ウェブの一
側の左の開口の左側の部分に、１対の側方短リブ板片
を、左の開口の周縁部から少々離して、その一方がウェ
ブの中央部の近傍から梁の長手方向に対して略４５°上
方に傾斜しその他方がウェブの中央部の近傍から梁の長
手方向に対して略４５°下方に傾斜しかつそれらの板面
がウェブ面に対して略直角になるように、ウェブ面及び
上又は下フランジの内側面に溶接し、ウェブの一側の右
の開口の右側の部分に、１対の側方短リブ板片を、右の
開口の周縁部から少々離して、その一方がウェブの中央
部の近傍から梁の長手方向に対して略４５°上方に傾斜
しその他方がウェブの中央部の近傍から梁の長手方向に
対して略４５°下方に傾斜しかつそれらの板面がウェブ
面に対して略直角になるように、ウェブ面及び上又は下
フランジの内側面に溶接する場合がある。この場合は、
側方短リブ板片をウェブの中央部の近傍から梁の長手方
向に対して略４５°傾斜してフランジの内側面にわって
延在できるように鋼板で形成する。[0005] In the manufacturing method of the present invention, a pair of side short rib plate pieces are slightly separated from the periphery of the left opening on the left side of the left opening on one side of the web. Are inclined approximately 45 ° upward from the vicinity of the central portion of the web with respect to the longitudinal direction of the beam, and the other are inclined approximately 45 ° downward relative to the longitudinal direction of the beam from near the central portion of the web, and Welded to the web surface and the inner surface of the upper or lower flange so that the surface is substantially perpendicular to the web surface, a pair of short side rib plates are provided on the right side of the right opening on one side of the web. The piece is slightly separated from the periphery of the right opening, one of which is inclined approximately 45 ° upward with respect to the longitudinal direction of the beam from near the center of the web, and the other is the beam from the vicinity of the center of the web. They are inclined approximately 45 ° downward with respect to the longitudinal direction and their plate surfaces are substantially perpendicular to the web surface. As such, it may be welded to the inner surface of the web surface and the upper or lower flange. in this case,
The side short rib plate is formed of a steel plate so as to extend from the vicinity of the central portion of the web to the inner side surface of the flange at an angle of about 45 ° with respect to the longitudinal direction of the beam.
【０００６】さらに、この発明の製造法では、ウェブの
一側の左右の開口の間の部分に、第１中央長リブ板片
を、左右の開口の周縁部から少々離して、それが左が上
で右が下になって梁の長手方向に対して略４５°傾斜し
かつその板面がウェブ面に対して略直角になるように、
ウェブ面及び上下フランジの内側面に溶接し、ウェブの
他側の左右の開口の間の部分に、第２中央長リブ板片
を、左右の開口の周縁部から少々離して、これが右が上
で左が下になって梁の長手方向に対して略４５°傾斜し
かつその板面がウェブ面に対して略直角になるように、
ウェブ面及び上下フランジの内側面に溶接し、前記第１
中央長リブ板片と前記第２中央長リブ板片とがウェブを
挟んで交差して略Ｘ字型の中央リブ体を形成する場合が
ある。この場合には、ウェブの両側の左の開口の左側又
は右の開口の右側の部分に、側方く字形リブ板片を、左
の開口の左側又は右の開口の右側の周縁部から少々離し
て、その一方の辺がウェブの中央部から梁の長手方向に
対して略４５°上方に傾斜しその他方の辺がウェブの中
央部から梁の長手方向に対して略４５°下方に傾斜しか
つそれらの板面がウェブ面に対して略直角になるよう
に、ウェブ面及び上下フランジの内側面に溶接する。或
は、ウェブの両側の左の開口の左側又は右の開口の右側
の部分に、側方短リブ板片を、左の開口の左側又は右の
開口の右側の周縁部から少々離して、ウェブの中央部の
近傍から第１又は第２中央長リブ板片と平行に梁の長手
方向に対して略４５°下方又は上方に傾斜しかつその板
面がウェブ面に対して略直角になるように、ウェブ面及
び下又は上フランジの内側面に溶接する。Further, according to the manufacturing method of the present invention, the first central long rib plate piece is slightly separated from the peripheral portions of the left and right openings at a portion between the left and right openings on one side of the web so that the left is located on the left side. At the top, the right is down, inclined approximately 45 ° with respect to the longitudinal direction of the beam, and the plate surface is substantially perpendicular to the web surface,
Welded to the web surface and the inner surfaces of the upper and lower flanges, and a second central long rib plate piece was slightly separated from the peripheral edges of the left and right openings at the portion between the left and right openings on the other side of the web, and So that the left side is down and is inclined approximately 45 ° with respect to the longitudinal direction of the beam and its plate surface is substantially perpendicular to the web surface,
The first surface is welded to the web surface and the inner surfaces of the upper and lower flanges.
In some cases, the central long rib plate piece and the second central long rib plate piece intersect with the web interposed therebetween to form a substantially X-shaped central rib body. In this case, on the left side of the left opening on both sides of the web or on the right side of the right opening, the side-shaped rib plate piece is slightly separated from the peripheral edge of the left side of the left opening or the right side of the right opening. And one side thereof is inclined approximately 45 ° upward from the center of the web with respect to the longitudinal direction of the beam, and the other side is inclined approximately 45 ° downward with respect to the longitudinal direction of the beam from the center of the web. And it welds to the web surface and the inner surfaces of the upper and lower flanges so that their plate surfaces are substantially perpendicular to the web surface. Alternatively, on the left side of the left opening on the both sides of the web or on the right side of the right opening, place the side short rib plate piece slightly away from the peripheral edge on the left side of the left opening or the right side of the right opening. From the vicinity of the center portion of the first or second central long rib plate piece, inclining downward or upward by approximately 45 ° with respect to the longitudinal direction of the beam, so that the plate surface is substantially perpendicular to the web surface. Then, it is welded to the web surface and the inner surface of the lower or upper flange.
【０００７】この発明の製造法では、ウェブの両側の左
右の開口の間の部分に、４つの中央短リブ板片を、左右
の開口の周縁部から少々離して、それらの一端がウェブ
の中央で互いに少々離れて梁の長手方向に対して略４５
゜上方又は下方に傾斜して放射状になりかつその板面が
ウェブ面に対して略直角になるように、ウェブ面及び上
又は下フランジの内側面に溶接して、中央が欠けた略Ｘ
字型の中央リブ体を形成する場合があり、この場合に
は、中央短リブ板片は、フランジの中央部の近傍から梁
の長手方向に対して略４５゜傾斜してフランジの内側面
にわたって延在できるように鋼板で形成する。中央短リ
ブ板片の形状は、例えば、台形、直角三角形、または矩
形にする。この発明の製造法では、Ｈ形断面の鋼製の小
梁のウェブにあける左と右の二つの開口の形状を円形に
したときには、ウェブの両側の左右の開口の間の部分
に、それぞれ中央長リブ板片を、左右の開口の周縁部か
ら少々離して、これが梁の長手方向に対して略４５゜傾
斜しかつその板面がウェブ面に対して略直角になるよう
に、ウェブ面および上下フランジの内側面に溶接し、そ
れぞれ１対の中央短リブ板片を、左右の開口の周縁部か
ら少々離して、前記中央長リブ板片の中央の上側及び下
側から梁の長手方向に対して略４５゜上方及び下方に傾
斜しかつそれらの板面がウェブ面に対して略直角になる
ように、中央長リブ板片、ウェブ面及び上又は下フラン
ジの内側面に溶接して略Ｘ字型の中央リブ体を形成する
だけですませる場合がある。この発明において鋼製梁に
溶接するリブ板片は、鋼板で構成し、その形状を、例え
ば、矩形、台形、直角三角形、長いの矩形板の中央を略
直角に曲げて形成したく字形等にする。側方短リブ板片
は、例えば、矩形、直角三角形、台形等の形状にし、１
対の側方短リブ板片の端を互いの間に隙間を空けてく字
状に配置する場合もある。この発明においてＨ形鋼梁に
溶接するリブ板片には、中央長リブ板片、中央短リブ板
片、側方く字形リブ板片及び側方短リブ板片があるが、
それらのリブ板片として、梁のウェブとフランジとの結
合部分の円弧状部分に対向する角部に切欠き部を形成し
たものを使うと、溶接作業がしやすくなる。開口を略四
角形にする場合は、開口の周縁部から少々離れたウェブ
の部分に、周縁部に略平行して中央長リブ板片、中央短
リブ板片、側方く字形リブ板片、側方短リブ板片等のリ
ブ板片を配設する。According to the manufacturing method of the present invention, four central short rib plate pieces are slightly separated from the peripheral portions of the left and right openings at a portion between the left and right openings on both sides of the web, and one end of each of them is located at the center of the web. Slightly apart from each other and approximately 45 to the longitudinal direction of the beam.
略 Welded to the web surface and the inner surface of the upper or lower flange so that it becomes inclined radially upward or downward and its plate surface is substantially perpendicular to the web surface, and the center is cut away substantially X.
In this case, the central short rib plate piece is inclined approximately 45 ° with respect to the longitudinal direction of the beam from the vicinity of the central portion of the flange, and in this case, the inner side surface of the flange < over br /> formed of a steel plate so that it can extend. The shape of the central short rib plate piece is, for example, a trapezoid, a right triangle, or a rectangle. According to the manufacturing method of the present invention, when the left and right openings in the web of the steel beam having the H-shaped cross section are made circular, the center between the left and right openings on both sides of the web is provided. The long rib plate pieces are slightly separated from the peripheral edges of the left and right openings, and are inclined at approximately 45 ° with respect to the longitudinal direction of the beam and the plate surface is substantially perpendicular to the web surface. Welded to the inner surface of the upper and lower flanges, a pair of central short rib plates are slightly separated from the peripheral edges of the left and right openings, respectively, in the longitudinal direction of the beam from above and below the center of the central long rib plate. About 45 ° upward and downward, and their plate surfaces are substantially perpendicular to the web surface by welding to the central long rib plate piece, the web surface and the inner surface of the upper or lower flange. In some cases, it is only necessary to form an X-shaped central rib body. In this invention , steel beams
The rib plate piece to be welded is made of a steel plate, and has a rectangular, trapezoidal, right-angled triangle, rectangular shape formed by bending the center of a long rectangular plate at a substantially right angle, or the like. The side short rib plate piece is formed in a shape of, for example, a rectangle, a right triangle, a trapezoid, or the like.
In some cases, the ends of the pair of side short rib plate pieces are arranged in a square shape with a gap therebetween. In the present invention, H-beam
The rib pieces to be welded include a central long rib piece, a central short rib piece, a side-shaped rib piece and a side short rib piece .
The use of the rib plate pieces having notches formed at the corners facing the arc-shaped portion of the joint between the beam and the flange of the beam facilitates the welding operation. When the opening is formed in a substantially rectangular shape, a central long rib plate piece, a central short rib plate piece, a side rib-shaped rib plate piece, and Li such as square short rib plate piece
To dispose the blanking plate pieces.
【０００８】[0008]
【作 用】この発明の梁の製造法によれば、Ｈ形断面の
鋼製梁のウェブの二つの開口の間の部分を、その一側に
形成した略Ｘ字型の中央リブ体とその他側に形成した略
Ｘ字型の中央リブ体とで挟んで補強し、又はそのウェブ
の二つの開口の間の部分を一側に溶接した第１中央長リ
ブ板片とその他側に溶接した第２中央長リブ板片とウェ
ブを挟んで略Ｘ字型の中央リブ体を形成して補強したり
することができるから、その略Ｘ字型の中央リブ体のト
ラス効果により、その二つの開口のある部分の梁を充分
に補強することができ、そのうえ、そのウェブの両側の
左の開口の左側及び右の開口の右側の部分に側方く字形
リブ板片や側方短リブ板片を溶接することにより、それ
らの部分を充分に補強することもでき、大口径の開口の
ある梁に十分な剛性、耐力、変形能力等を付与すること
ができる。According to the method of manufacturing a beam of the present invention, a portion between two openings of a web of a steel beam having an H-shaped cross section is provided with a substantially X-shaped central rib formed on one side thereof and other portions. A first central long rib plate piece welded to the other side and a first central long rib plate piece welded to one side and reinforced by being sandwiched by a substantially X-shaped central rib body formed on the side, or a portion between two openings of the web is welded to the other side. (2) Since a substantially X-shaped central rib body can be formed and reinforced by sandwiching the central long rib plate piece and the web, the two openings are formed by the truss effect of the substantially X-shaped central rib body. Can be sufficiently reinforced, and besides, the side-shaped rib plate and the side short rib plate are placed on the left side of the left opening on both sides of the web and on the right side of the right opening. By welding, these parts can also be reinforced sufficiently, and sufficient rigidity for beams with large diameter openings , Proof stress, deformability and the like.
【０００９】[0009]
【実施例】この発明の実施例１が図１ないし図１２に示
されている。図１及び図２に示すように、幅ｂ１で高さ
ｈのＨ形鋼梁１０のウェブ１０ｂの所望の部分に、間隔
をおいて互いに近接させて左と右の二つの大口径の略四
角形の開口Ａ１、Ａ２を形成する。二つの開口Ａ１、Ａ
２の四角形は、その対角線の一方が梁のウェブの中央を
通る長手方向の線に一致し、その対角線の他方が梁の長
手方向に対して直角な線に一致するように形成する。従
って、四角形の各辺は梁の長手方向に対して略４５゜傾
斜している。その四角形の４隅部に円弧状部Ａ１ｅ、Ａ
２ｅが形成され、これらの円弧状部Ａ１ｅ、Ａ２ｅの円
の半径は、梁１０のウェブ１０ｂの部分の厚さの約３倍
（たとえば、２０ｍｍないし４０ｍｍ）程度にされ、そ
して、二つの略四角形の開口Ａ１、Ａ２にされ、二つの
開口Ａ１、Ａ２の上下の隅部は、その開口縁とフランジ
１０ａと間に、フランジ１０ａとウェブ１０ｂとの連結
部に形成された円弧状部１０ｃが残るように、間隔ｘ１
を空けて形成する。次に、中央長リブ板片１１は、鋼板
製で、ウェブ１０ｂに沿って梁の長手方向に対して略４
５゜傾斜して上下フランジ間に延在できるよう、図３に
示すように、短い辺１１ａ、１１ｂの長さをＨ形鋼梁１
０のフランジの幅ｂ１からウェブ１０ｂの厚さを引いた
値の半分の幅ｂ２以下にし、長い辺１１ｃ、１１ｄの長
さを梁の長手方向に対して略４５゜傾斜した線のＨ形鋼
梁１０のウェブ１０ｂを横切る部分の長さＬ１よりも少
々短くした矩形に形成され、長い辺１１ｃと短い辺１１
ａ、１１ｂとからなる二つの角部にそれぞれ切欠き部１
１ｅを形成する。中央短リブ板片１２は、鋼板製で、ウ
ェブ１０ｂの略中央から梁の長手方向に対して略４５゜
傾斜してフランジの内側面にわたって延在できるよう、
図４に示すように、短い辺１２ａ、１２ｂの長さを前記
幅ｂ２以下にし、長い辺１２ｃ、１２ｄの長さを前記長
さＬ１から中央長リブ板片１１の厚さを引いた値の半分
の長さＬ２以下とした矩形に形成され、長い辺１２ｃと
短い辺１２ａとからなる角部に切欠き部１２ｅを形成す
る。切欠き部１１ｅ、１２ｅは、例えば、角部から一辺
が２０ｍｍ程度の直角二等辺三角形を切除したときにで
きる切欠きである。側方く字形リブ板片の素材は、鋼板
製で、図５に示すように、短い辺１３ａ、１３ｂの長さ
を前記幅ｂ２以下にし、長い辺１３ｃ、１３ｄの長さを
前記長さＬ１よりも少々短くした矩形で、長い辺１３ｃ
と短い辺１３ａ、１３ｂとからなる二つの角部に切欠き
部１３ｅが形成されている。側方く字形リブ板片１３
は、図６に示すように、図５に示す素材をその中央で略
直角に曲げ、屈曲部の内側に開口Ａ１、Ａ２の隅部の円
弧状部Ａ１ｅ、Ａ２ｅの円の半径よりも少々大きい半径
の円弧状部１３ｆが形成され、その二つの辺がウェブの
中央部から梁の長手方向に対して略４５゜傾斜してフラ
ンジの内側面にわたって延在できるようになっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 of the present invention is shown in FIGS. As shown in FIG. 1 and FIG. 2, a desired portion of the web 10 b of the H-shaped steel beam 10 having a width b 1 and a height h is arranged to be close to each other at an interval and to have two large diameters of left and right. The square openings A1 and A2 are formed. Two openings A1, A
The two squares are formed such that one of the diagonals coincides with a longitudinal line passing through the center of the beam web and the other of the diagonals coincides with a line perpendicular to the longitudinal direction of the beam. Therefore, each side of the rectangle is inclined at approximately 45 ° with respect to the longitudinal direction of the beam. Arc-shaped portions A1e, A at the four corners of the square
2e is formed, the radius of the circle of these arc-shaped portions A1e and A2e is set to be about three times (for example, 20 mm to 40 mm) the thickness of the portion of the web 10b of the beam 10, and two substantially squares are formed. In the upper and lower corners of the two openings A1 and A2, an arc-shaped portion 10c formed at the connecting portion between the flange 10a and the web 10b remains between the opening edge and the flange 10a. So that the interval x 1
Are formed separately. Next, the central long rib plate piece 11 is made of a steel plate, and is substantially 4 mm apart from the longitudinal direction of the beam along the web 10b.
As shown in FIG. 3, the length of the short sides 11a and 11b is set to the length of the H-shaped steel beam 1 so as to extend between the upper and lower flanges at an angle of 5 °.
And the width b 1 of the flange of 0 to less than the width b 2 of half the thickness value obtained by subtracting the web 10b, the long sides 11c, a line that is inclined substantially 45 ° the length of 11d relative to the longitudinal direction of the beam H is formed in a rectangular that is slightly shorter than the length L 1 of the portion across the web 10b of the section steel beam 10, the long sides 11c and short edges 11
a and 11b are respectively provided with notches 1 at two corners.
1e is formed. Central short rib plate piece 12 is made of steel, so that it can extend I was I the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam from substantially the center of the web 10b,
As shown in FIG. 4, the short side 12a, the length of 12b in the width b 2 below, the long sides 12c, the length of 12d minus the thickness of the central length rib plate piece 11 from the length L 1 It is formed in a half rectangle and the length L 2 following values, to form a notch 12e in the corner portion made of a long side 12c and a short side 12a. The cutouts 11e and 12e are cutouts formed when, for example, a right-angled isosceles triangle having a side of about 20 mm is cut from a corner. Lateral rather shaped rib plate piece material is made of steel plate, as shown in FIG. 5, the short side 13a, the length of 13b in the width b 2 below, the long sides 13c, the length length of 13d a rectangle was slightly shorter than L 1, the long sides 13c
A notch 13e is formed at two corners consisting of the short sides 13a and 13b. Side-shaped rib plate piece 13
As shown in FIG. 6, the material shown in FIG. 5 is bent at a substantially right angle at the center thereof, and is slightly larger than the radius of the arc-shaped portions A1e and A2e at the corners of the openings A1 and A2 inside the bent portion. radius is the arc-shaped portion 13f is formed, the two sides is adapted to be extended I was I the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam from the center of the web .
【００１０】次に、Ｈ形鋼梁１０の略四角形の開口Ａ
１、Ａ２のまわりへの各リブ板片１１、１２、１３の取
付け方等を説明する。Ｈ形鋼梁１０のウェブ１０ｂの一
側のウェブ面１０ｂ１の二つの開口Ａ１、Ａ２の間に、
中央長リブ板片１１を配し、中央長リブ板片１１の長い
辺１１ｃを、間隔ｘ２をおいて左右の開口Ａ１、Ａ２の
辺Ａ１ａ、Ａ２ｂに沿わせ、中央長リブ板片１１の短い
辺１１ａ、１１ｂをＨ形鋼梁１０のフランジの内側面１
０ａ１に沿わせて、中央長リブ板片１１がウェブ面１０
ｂ１に対して略直角になるように、その辺１１ｃをウェ
ブ１０ｂ１面に溶接（例えば、すみ肉溶接）ｗし、その
辺１１ａ、１１ｂをフランジの内側面１０ａ１に溶接
（例えば、突合せ溶接）ｗする。同じ側のウェブ面１０
ｂ１の二つの開口Ａ１、Ａ２の間に中央短リブ板片１
２、１２を配し、一方の中央短リブ板片１２を前記間隔
ｘ２と同様の間隔をおいて前記開口Ａ２の辺Ａ２ａに沿
わせて、他方の中央短リブ板片１２を間隔ｘ２をおいて
前記開口Ａ１の辺Ａ１ｂに沿わせて、これら二つの中央
短リブ板片１２の辺１２ａをフランジの内側面１０ａ１
に沿わせて、中央短リブ板片１２、１２をウェブ面１０
ｂ１に対して略直角になるように、その辺１２ｃをウェ
ブ面１０ｂ１に溶接（例えば、すみ肉溶接）ｗし、かつ
それらの辺１２ａをフランジの内側面１０ａ１に溶接
（例えば、突合せ溶接）ｗする。また、中央短リブ板片
１２、１２の辺１２ｂを中央長リブ板片１１の中央部の
側面に溶接（例えば、突合せ溶接）ｗし、略Ｘ字型の中
央リブ体を形成する。そして、同じ側のウェブ面１０ｂ
１の左の開口Ａ１の左側の部分及び右の開口Ａ２の右側
の部分に、それぞれ側方く字形リブ板片１３を配し、こ
れらのリブ板片１３の長辺１３ｃを前記間隔ｘ２と同様
の間隔をおいて左の開口Ａ１の辺Ａ１ｃ、Ａ１ｄ又は開
口Ａ２の辺Ａ２ｃ、Ａ２ｄに沿わせて、各リブ板片１３
の辺１１ａ、１１ｂをＨ形鋼梁１０のフランジの内側面
１０ａ１に沿わせ、各リブ板片１３がウェブ面１０ｂ１
に対して略直角になるように、その辺１３ｃをウェブ面
１０ｂ１に溶接（例えば、すみ肉溶接）ｗし、かつそれ
らの辺１１ａ、１１ｂをフランジの内側面１０ａ１に溶
接（例えば、突合せ溶接）ｗする。Next, a substantially rectangular opening A of the H-shaped steel beam 10 will be described.
How to attach each rib plate piece 11, 12, 13 around 1, A2 will be described. Between the two openings A1 and A2 of the web surface 10b1 on one side of the web 10b of the H-beam 10
Arranged central length rib plate piece 11, the long sides 11c of the central length rib plate piece 11, the opening A1 of the right and left at an interval x 2, A2 sides A1a, along a A2b, the central length rib plate piece 11 The short side 11a, 11b is the inner surface 1 of the flange of the H-shaped steel beam 10.
0a1, the central long rib plate piece 11 is
The side 11c is welded to the surface of the web 10b1 (for example, fillet welding) w so as to be substantially perpendicular to b1, and the sides 11a and 11b are welded (for example, butt welding) w to the inner side surface 10a1 of the flange. I do. Web surface 10 on the same side
b1 between the two openings A1 and A2
Arrange 2,12, and one of the central short rib plate piece 12 along a side A2a of the opening A2 at intervals similar to the distance x 2, distance x 2 and the other central short rib plate piece 12 Along the side A1b of the opening A1, the sides 12a of the two central short rib plate pieces 12 are connected to the inner side surface 10a1 of the flange.
Along the center short rib plate pieces 12, 12
The side 12c is welded (for example, fillet welding) w to the web surface 10b1 so as to be substantially perpendicular to b1, and the sides 12a are welded (for example, butt welding) w to the inner side surface 10a1 of the flange. I do. The sides 12b of the central short rib plate pieces 12, 12 are welded (for example, butt welding) w to the side surface of the central portion of the central long rib plate piece 11, thereby forming a substantially X-shaped central rib body. And the web surface 10b on the same side
The left part and right part of the right of the opening A2 of the first left opening A1, arranged respectively laterally rather shaped rib plate piece 13, the long sides 13c of the rib plates piece 13 and the distance x 2 At the same interval, the rib plate pieces 13 are arranged along the sides A1c, A1d of the left opening A1 or the sides A2c, A2d of the opening A2.
Side 11a, 11b along the inner surface 10a1 of the flange of the H-shaped steel beam 10, each rib plate piece 13 is a web surface 10b1
The sides 13c are welded (for example, fillet welding) w to the web surface 10b1 so as to be substantially at right angles to the web surface, and the sides 11a and 11b are welded to the inner side surface 10a1 of the flange (for example, butt welding). w.
【００１１】また、Ｈ形鋼梁１０のウェブ１０ｂの他側
のウェブ面１０ｂ２の二つの開口Ａ１、Ａ２の間に、中
央長リブ板片１１を配し、中央長リブ板片１１の長い辺
１１ｃを前記間隔ｘ２と同様の間隔をおいて左右の四角
形の開口Ａ１、Ａ２の辺Ａ２ａ、Ａ１ｂに沿わせて、中
央長リブ板片１１の短い辺１１ａ、１１ｂをＨ形鋼梁１
０のフランジの内側面１０ａ２に沿わせて、中央長リブ
板片１１がウェブ面１０ｂ２に対して略直角になるよう
に、その辺１１ｃをウェブ１０ｂ２面に溶接ｗし、その
辺１１ａ、１１ｂをフランジの内側面１０ａ２に溶接ｗ
する。同じ側のウェブ面１０ｂ２の二つの開口Ａ１、Ａ
２の間に中央短リブ板片１２、１２を配し、一方の中央
短リブ板片１２を前記間隔ｘ２と同様の間隔をおいて左
の開口Ａ１の辺Ａ１ａに沿わせ、他方の中央短リブ板片
１２を前記間隔ｘ２と同様の間隔をおいて右の開口Ａ２
の辺Ａ２ｂに沿わせて、これら二つの中央短リブ板片１
２の辺１２ａをフランジの内側面１０ａ２に沿わせて、
中央短リブ板片１２、１２をウェブ面１０ｂ２に対して
略直角になるように、その辺１２ｃをウェブ面１０ｂ２
に溶接ｗし、かつそれらの辺１１ａをフランジの内側面
１０ａ２に溶接ｗする。また、中央短リブ板片１２、１
２の辺１２ｂを中央長リブ板片１１の中央部の側面に溶
接ｗし、略Ｘ字型の中央リブ体を形成する。そして、同
じ側のウェブ面１０ｂ２の左の開口Ａ１の左側の部分及
び右の開口Ａ２の右側の部分に、それぞれ側方く字形リ
ブ板片１３を配し、これらのリブ板片１３の長辺１３ｃ
を前記間隔ｘ２と同様の間隔をおいて左の開口Ａ１の辺
Ａ１ｃ、Ａ１ｄ又は右の開口Ａ２の辺Ａ２ｃ、Ａ２ｄに
沿わせて、各側方く字形リブ板片１３の辺１３ａ、１３
ｂをフランジ１０ａの内側面１０ａ２に沿わせ、各側方
く字形リブ板片１３がウェブ面１０ｂ２に対して略直角
になるように、その辺１３ｃをウェブ面１０ｂ２に溶接
ｗし、かつそれらの辺１３ａ、１３ｂをフランジの内側
面１０ａ２に溶接ｗする。なお、フランジとウェブとの
連結部の円弧状部１０ｃに対応する中央長リブ板片１
１、中央短リブ板片１２及び側方リブ板片１３の角部に
切欠き部１１ｅがあるから、各リブ板片１１〜１３を所
望の位置に容易に溶接することができる。中央長リブ板
片１１、中央短リブ板片１２及び側方リブ板片１３は、
これらと開口Ａ１，Ａ２の各辺Ａ１ａ〜Ａ１ｄ、Ａ２ａ
〜Ａ２ｄとの間に僅かな間隔ｘ２おいてウェブ面１０ｂ
１，１０ｂ２に溶接するから、各リブ板片１１〜１３の
両側をウェブ面１０ｂ１，１０ｂ２に溶接することがで
き、各リブ板片１１〜１３をウェブ面１０ｂ１，１０ｂ
２に強固に接合することができる。実施例１の大口径の
開口のある鋼製梁と通常の無開口梁との単調載荷実験及
び繰返し載荷実験の結果が図１２に示されている。この
結果より、鋼製梁の剛性においては、両者は同等であ
り、変形能力においては、中央長短リブ板片１１、１２
をＸ字状に結合した略Ｘ字型の中央リブ体のトラス効果
等により、実施例１の鋼製梁が向上していることがわか
る。A central long rib plate 11 is disposed between the two openings A1 and A2 of the web surface 10b2 on the other side of the web 10b of the H-shaped steel beam 10, and the long side of the central long rib plate 11 is long. 11c sides A2a of the distance x 2 openings of the left and right square at the same intervals as A1, A2, and along a A1b, the short side 11a of the central length rib plate piece 11, 11b and H-shaped steel beam 1
The side 11c is welded to the surface of the web 10b2 so that the central long rib plate piece 11 is substantially perpendicular to the web surface 10b2 along the inner side surface 10a2 of the flange 0, and the sides 11a and 11b are connected. Weld w to inner surface 10a2 of flange
I do. Two openings A1, A in the web surface 10b2 on the same side
Disposing a central short rib plate pieces 12 and 12 between the two, not one of the central short rib plate piece 12 at the same intervals as the interval x 2 along the sides A1a left opening A1, the other central short rib plate piece 12 at the same intervals as the interval x 2 right opening A2
Along these sides A2b, these two central short rib plate pieces 1
2 along the inner side surface 10a2 of the flange,
The sides 12c of the central short rib plate pieces 12, 12 are substantially perpendicular to the web surface 10b2.
And their sides 11a are welded to the inner surface 10a2 of the flange. The center short rib plate pieces 12, 1
The second side 12b is welded to the side surface of the central portion of the central long rib plate piece 11 to form a substantially X-shaped central rib body. Side-shaped rib plate pieces 13 are disposed on the left side portion of the left opening A1 and the right side portion of the right opening A2 of the web surface 10b2 on the same side, and the long sides of these rib plate portions 13 are provided. 13c
Sides A1c left opening A1 at intervals similar to the distance x 2, A1d or right sides of the opening A2 A2c, and along a A2d, the sides 13a, 13 of each side rather shaped rib plate piece 13
b along the inner side surface 10a2 of the flange 10a, and weld the side 13c thereof to the web surface 10b2 so that each side-shaped rib plate piece 13 is substantially perpendicular to the web surface 10b2. The sides 13a and 13b are welded to the inner side surface 10a2 of the flange. The central long rib plate piece 1 corresponding to the arc-shaped portion 10c of the connecting portion between the flange and the web is provided.
1. Since there are notches 11e at the corners of the center short rib plate piece 12 and the side rib plate piece 13, the rib plate pieces 11 to 13 can be easily welded to desired positions. The center long rib plate piece 11, the center short rib plate piece 12, and the side rib plate piece 13
These and the sides A1a to A1d and A2a of the openings A1 and A2.
Small distance x 2 Oite web surface 10b between the ~A2d
1 and 10b2, both sides of each rib plate piece 11 to 13 can be welded to the web surfaces 10b1 and 10b2, and each rib plate piece 11 to 13 can be welded to the web surfaces 10b1 and 10b.
2 can be firmly joined. FIG. 12 shows the results of the monotonous loading test and the repeated loading test of the steel beam having a large-diameter opening of Example 1 and the ordinary non-opening beam. From this result, the rigidity of the steel beam is the same in both cases, and the deformability is the length of the central long and short rib plate pieces 11 and 12.
It can be seen that the steel beam of Example 1 is improved due to the truss effect and the like of the substantially X-shaped central rib body in which the steel beams are joined in an X shape.
【００１２】この発明の実施例２が図１３及び図１４に
示されている。実施例２においては、Ｈ形鋼梁１０、中
央長リブ板片１１及び側方く字形リブ板片１３の構成、
及びＨ形鋼梁１０と中央長リブ板片１１との関係は実施
例１と同じであり、実施例２では中央短リブ板片１２等
が省かれている。Ｈ形鋼梁１０のウェブ１０ｂの一側の
ウェブ面１０ｂ１の左の開口Ａ１の左側方の部分に第１
側方く字形リブ板片１３を配し、このリブ板片１３の辺
１３ｃを前記間隔ｘ２と同様の間隔をおいて左の開口Ａ
１の辺Ａ１ｃ、Ａ１ｄに沿わせて、その辺１３ａ、１３
ｂをフランジの内側面１０ａ１に沿わせ、第１側方く字
形リブ板片１３がウェブ面１０ｂ１に対して略直角にな
るように、その辺１３ｃをウェブ面１０ｂ１に溶接し、
その辺１３ａ、１３ｂをフランジの内側面１０ａ１に溶
接する。また、Ｈ形鋼梁１０のウェブ１０ｂの他側のウ
ェブ面１０ｂ２の開口Ａ２の右側方の部分に第２側方く
字形リブ板片１３を配し、この側方く字形リブ板片１３
の辺１３ｃを前記間隔ｘ２と同様の間隔をおいて左の開
口Ａ２の辺Ａ２ｃ、Ａ２ｄに沿わせて、その辺１３ａ、
１３ｂをフランジの内側面１０ａ２に沿わせ、第２側方
く字形リブ板片片１３がウェブ面１０ｂ２に対して略直
角になるように、その辺１３ｃをウェブ面１０ｂ２に溶
接し、その辺１３ａ、１３ｂをフランジの内側面１０ａ
２に溶接する。実施例２のＨ形鋼梁１０では、ウェブ１
０ｂの開口Ａ１、Ａ２間の部分の一側１０ｂ１にその左
が上でその右が下になって梁の長手方向に対して略４５
°傾斜させて溶接した第１中央長リブ板片１１と、その
他側１０ｂ２にその右が上でその左が下になって梁の長
手方向に対して略４５°傾斜させて溶接した第２中央長
リブ板片１１とでウェブ１０ｂを挟んで略Ｘ字状の中央
リブ体を形成し、この略Ｘ字状の中央リブ体により、Ｈ
形鋼梁１０の二つの開口Ａ１、Ａ２の間の部分を補強
し、ウェブの一側の左の開口の左側の開口の近傍の部分
に第１側方く字形リブ板片１３を溶接し、ウェブの他側
の右の開口の右側の開口の近傍の部分に第２側方く字形
リブ板片を溶接して、第１及び第２の側方く字形リブ板
体１３により、Ｈ形鋼梁１０の左の開口の左側及び右の
開口の右側の開口の近傍の部分を補強するようになって
いる。A second embodiment of the present invention is shown in FIGS. In the second embodiment, the configuration of the H-shaped steel beam 10, the central long rib plate piece 11, and the side rib-shaped rib plate piece 13,
The relationship between the H-shaped steel beam 10 and the central long rib plate piece 11 is the same as that of the first embodiment, and the second embodiment omits the central short rib plate piece 12 and the like. The first portion of the web surface 10b1 on one side of the web 10b of the H-shaped steel beam 10 is located on the left side of the left opening A1.
Arranged side rather shaped rib plate piece 13, left opening A sides 13c of the rib plate piece 13 at the same intervals as the interval x 2
Along the sides A1c and A1d, the sides 13a and 13
b is welded along the inner side surface 10a1 of the flange, and the side 13c thereof is welded to the web surface 10b1 so that the first laterally-shaped rib plate piece 13 is substantially perpendicular to the web surface 10b1.
The sides 13a and 13b are welded to the inner surface 10a1 of the flange. Further, arranged second lateral rather shaped rib plate piece 13 to the right side portion of the other side of the web surface 10b 2 of the opening A2 of the web 10b of the H-shaped steel beam 10, rather the side shaped rib plate piece 13
Edges 13c sides A2c of the distance x 2 left opening A2 at the same interval as, and along a A2d, the sides 13a,
The side 13c is welded to the web surface 10b2 so that the second side-shaped rib plate piece 13 is substantially perpendicular to the web surface 10b2. , 13b to the inner surface 10a of the flange
Weld to 2. In the H-beam 10 of the second embodiment, the web 1
0b on one side 10b1 of the portion between the openings A1 and A2, with the left side up and the right side down, approximately 45 with respect to the longitudinal direction of the beam.
The first center long rib plate piece 11 which is welded at an angle and the second center which is welded to the other side 10b2 at an angle of approximately 45 ° with respect to the longitudinal direction of the beam with its right side up and its left side down. A substantially X-shaped central rib body is formed between the long rib plate piece 11 and the web 10b.
A portion between the two openings A1 and A2 of the section steel beam 10 is reinforced, and a first side-shaped rib plate piece 13 is welded to a portion near the left opening of the left opening on one side of the web, A second side-shaped rib plate piece is welded to a portion near the right opening of the right opening on the other side of the web, and the first and second side-shaped rib plate members 13 are used to weld the H-section steel. The portion near the left opening of the left opening and the right opening of the right opening of the beam 10 is reinforced.
【００１３】この発明の実施例３が図１５ないし図１９
に示されている。Ｈ形鋼梁１０、中央長リブ板片１１及
び中央短リブ板片１２の構成、ならびに中央長短リブ板
片１１、１２のＨ形鋼梁１０への取付け方は、実施例１
と同じである。実施例３においては、左の開口Ａ１の左
側及び右の開口Ａ２の右側に配置する中央が欠けたく字
形の側方リブ体を、二つの同形の直角三角形の側方短リ
ブ板片１３Ａで構成する。側方短リブ板片１３Ａは、鋼
板製で、ウェブ１０ｂの中央部の近傍から梁の長手方向
に対して略４５°傾斜してフランジの内側面にわって延
在できるよう、図１７に示されているように、直角をは
さむ一方の短辺１３Ａａの長さが前記幅ｂ２以下であ
り、直角をはさむ他方の長辺１３Ａｂが前記長さＬ２以
下である直角三角形に形成され、長辺１３Ａｂと短辺１
３Ａａとからなる角部に切欠き部１３Ａｅが形成されて
いる。図１５及び図１６に示すように、Ｈ形鋼梁１０の
ウェブ１０ｂの両方のウェブ面１０ｂ１、１０ｂ２の左
の開口Ａ１の左側の部分及び右の開口Ａ２の右側の部分
に、それぞれ二つの側方短リブ板片１３Ａを配し、各リ
ブ板片１３Ａの辺１３Ａｂを前記間隔ｘ２と同様の間隔
をおいて各開口Ａ１、Ａ２の辺Ａ１ｃ、Ａ１ｄ、Ａ２
ｃ、Ａ２ｄに沿わせて、各リブ板片１３Ａの辺１３Ａａ
をフランジ１０ａの内側面１０ａ１、１０ａ２に沿わ
せ、側方短リブ板片１３Ａがウェブ面１０ｂ１、１０ｂ
２に対して略直角になるように、それらの辺１３Ａｂを
ウェブ面１０ｂ１、１０ｂ２に溶接し、それらの辺１３
ＡａをＨ形鋼梁１０のフランジの内側面１０ａ１、１０
ａ２に溶接する。そして、二つの側方短リブ板片１３Ａ
により中央が欠けたく字形の補強リブ体を形成する。実
施例３のＨ形鋼梁１０は、ウェブ１０ｂの開口Ａ１、Ａ
２間の部分が、ウェブの両側に溶接された中央長リブ板
片１１と中央短リブ板片１２からなる略Ｘ字型の中央リ
ブ体で補強され、ウェブの両側の左の開口の左側及び右
の開口の右側の開口の近傍の部分が、これらの部分の両
側にそれぞれ二つの側方短リブ板片１３Ａを溶接してな
る中央が欠けたく字形の補強リブ体で補強されている。
実施例３の鋼製梁は、Ｈ形鋼梁１０の左の開口Ａ１の左
側の隅部の近傍のウェブの部分１０ｂ１及び右の開口Ａ
２の右側の隅部の近傍のウェブの部分１０ｂ２がＨ形鋼
梁１０の成方向に切り欠かれていないから、これらのウ
ェブの部分１０ｂ１、１０ｂ２は特に補強しなくても、
必要な強度や耐力があり、鋼製梁の左右の開口Ａ１、Ａ
２の大きさを所望の大きさにすることができる。なお、
図１７に示す直角三角形の側方短リブ板片１３Ａの代り
に、図１８に示す台形の直角な角部に切欠き部１３Ｂｅ
のある側方短リブ板片１３Ｂや、図１９に示す矩形の一
つの隅部に切欠き部１３Ｃｅのある側方短リブ板片１３
Ｃを使うこともできる。Embodiment 3 of the present invention is shown in FIGS.
Is shown in The configuration of the H-shaped steel beam 10, the central long rib plate piece 11 and the central short rib plate piece 12, and how to attach the central long and short rib plate pieces 11, 12 to the H-shaped steel beam 10 are described in Example 1.
Is the same as In the third embodiment, a lateral rib body having a rectangular shape with a lacking center disposed on the left side of the left opening A1 and the right side of the right opening A2 is constituted by two identical right-angled triangular lateral short rib plate pieces 13A. I do. The side short rib plate piece 13A is made of a steel plate, and is shown in FIG. 17 so as to extend from the vicinity of the center of the web 10b to the inside surface of the flange at an angle of approximately 45 ° with respect to the longitudinal direction of the beam. as is the length of one short side 13Aa sandwiching the right angle less than the width b 2, are formed in the right triangle other long side 13Ab sandwiching the right angle the at length L 2 or less, the length Side 13Ab and short side 1
A cutout 13Ae is formed at a corner formed by 3Aa. As shown in FIG. 15 and FIG. 16, two sides are respectively provided on the left side portion of the left opening A1 and the right side portion of the right opening A2 of both the web surfaces 10b1 and 10b2 of the web 10b of the H-beam 10. square short ribs arranged plate pieces 13A, side A1c sides 13Ab the interval x 2 each at the same intervals as the opening A1, A2 of each rib plate pieces 13A, A1d, A2
c, side 13Aa of each rib plate piece 13A along A2d
Along the inner side surfaces 10a1 and 10a2 of the flange 10a, and the side short rib plate pieces 13A are connected to the web surfaces 10b1 and 10b.
2 are welded to the web surfaces 10b1 and 10b2 so as to be substantially perpendicular to
Aa is the inner surface 10a1, 10 of the flange of the H-shaped steel beam 10.
Weld to a2. And two side short rib plate pieces 13A
This forms a rectangular reinforcing rib body whose center is not chipped. The H-shaped steel beam 10 of the third embodiment has openings A1, A of the web 10b.
The portion between the two is reinforced with a substantially X-shaped central rib body consisting of a central long rib plate piece 11 and a central short rib plate piece 12 welded to both sides of the web, and the left side of the left opening on both sides of the web and The portions of the right opening in the vicinity of the right opening are reinforced with rectangular rib-shaped reinforcing ribs formed by welding two side short rib plate pieces 13A to both sides of these portions.
Steel beams of Example 3, the left corner web portion 10b 1 and the right of the opening A in the vicinity of the left opening A1 of H-shaped steel beam 10
Since portion 10b 2 of the neighboring web corners of the second right is not cut in the formation direction of the H-shaped steel beam 10, also part 10b 1 of these webs, 10b 2 are not particularly reinforced,
Has the required strength and proof strength, left and right openings A1, A in steel beams
2 can be made a desired size. In addition,
In place of the right triangular side short rib plate piece 13A shown in FIG. 17, a notch 13Be is formed at a right angle corner of a trapezoid shown in FIG.
19B, or a short rib portion 13C having a notch 13Ce at one corner of a rectangle shown in FIG.
C can also be used.
【００１４】この発明の実施例４が図２０及び図２１に
示されている。実施例４は実施例２の変形であり、鋼製
梁１０と中央長リブ板片１１との関係が実施例２と同じ
で、中央長リブ片板１１と平行に、二つの直角三角形の
側方短リブ板片１３Ａを配置する例である。実施例４で
は中央短リブ板片１２が省かれている。側方短リブ板片
１３Ａの構成は実施例３と同じである。Ｈ形鋼梁１０の
一側のウェブ面１０ｂ１の左の開口Ａ１の左側方の部分
及び右の開口Ａ２の右側方の部分に、二つの開口Ａ１、
Ａ２の間に左が上で右が下になって梁の長手方向に対し
て略４５°傾斜して配置した中央長リブ板片１１と略平
行に、それぞれ側方短リブ板片１３Ａを配し、一方の側
方短リブ板片１３Ａの辺１３Ａｂを前記間隔ｘ２と同様
の間隔をおいて左の開口Ａ１の辺Ａ１ｃに沿わせ、他方
の側方短リブ板片１３Ａの辺１３Ａｂを前記間隔ｘ２と
同様の間隔をおいて右の開口Ａ２の辺Ａ２ｄに沿わせ、
両側方短リブ板片１３Ａの辺１３Ａａをフランジ１０ａ
の内側面１０ａ１に沿わせて、両側方短リブ板片１３Ａ
がウェブ面１０ｂ１に対して略直角になるように、それ
らの辺１３Ａｂをウェブ面１０ｂ１に溶接し、それらの
辺１３ａをフランジ１０ａの内側面１０ａ１に溶接す
る。また、Ｈ形鋼梁１０の他側のウェブ面１０ｂ２の左
の開口Ａ１の左側の部分及び右の開口Ａ２の右側の部分
に、二つの開口Ａ１、Ａ２の間に右が上で左が下になっ
て梁の長手方向に対して略４５°傾斜して配置した中央
長リブ板片１１と略平行に、それぞれ側方短リブ板片１
３Ａを配し、一方の側方短リブ板片１３Ａの辺１３Ａｂ
を左の開口Ａ１の辺Ａ１ｄに沿わせ、他方の側方短リブ
板片１３Ａの辺１３Ａｂを右の開口Ａ２の辺Ａ２ｃに沿
わせ、両側方短リブ板片１３Ａの辺１３Ａａをフランジ
１０ａの内側面１０ａ２に沿わせて、両側方短リブ板片
１３Ａがウェブ面１０ｂ２に対して略直角になるよう
に、それらの辺１３Ａｂをウェブ面１０ｂ２に溶接し、
それらの辺１３Ａａをフランジ１０ａの内側面１０ａ２
に溶接する。実施例４のＨ形鋼梁１０は、ウェブ１０ｂ
の開口Ａ１、Ａ２間の部分が、ウェブの一方の面１０ｂ
１に溶接した第１中央長リブ板片１１とその他方の面１
０ｂ２に溶接した第２中央長リブ板片１１とからなる略
Ｘ字状の中央リブ体で補強され、ウェブの両側の左の開
口の左側の開口の近傍の部分が、この部分の一側の面１
０ｂ１に溶接した側方短リブ板片１３Ａとその他側の面
１０ｂ２に溶接した側方短リブ板片１３Ａとからなる中
央が欠けたく字形の補強リブ体で補強され、ウェブの両
側の右の開口の右側の開口の近傍の部分が、この部分の
一側の面１０ｂ１に溶接した側方短リブ板片１３Ａとそ
の他側の面１０ｂ２に溶接した側方短リブ板片１３Ａと
からなる中央が欠けたく字形の補強リブ体で補強されて
いる。A fourth embodiment of the present invention is shown in FIGS. The fourth embodiment is a modification of the second embodiment, and the relationship between the steel beam 10 and the central long rib plate piece 11 is the same as that of the second embodiment. This is an example in which short rib plate pieces 13A are arranged. In the fourth embodiment, the central short rib plate piece 12 is omitted. The configuration of the side short rib plate piece 13A is the same as that of the third embodiment. On the left side portion and right side portion of the right opening A2 of the one side of the web surface 10b 1 of the left opening A1 of H-shaped steel beam 10, two openings A1,
A short side rib plate piece 13A is arranged between A2, approximately parallel to the central long rib plate piece 11 arranged with the left side up and the right side down at an angle of about 45 ° with respect to the longitudinal direction of the beam. and, the sides 13Ab of one side short rib plate piece 13A at a distance similar to the distance x 2 along a side A1c left opening A1, the sides 13Ab of the other lateral short rib plate pieces 13A along a side A2d right opening A2 at the same intervals as the interval x 2,
The side 13Aa of the short rib plate piece 13A on both sides is connected to the flange 10a.
Along the inner side surface 10a1, the short rib plate pieces 13A on both sides.
Are welded to the web surface 10b1 and their sides 13a are welded to the inner side surface 10a1 of the flange 10a so that is substantially perpendicular to the web surface 10b1. Further, in the left side portion of the left opening A1 and the right side portion of the right opening A2 of the web surface 10b2 on the other side of the H-shaped steel beam 10, the right is up and the left is down between the two openings A1 and A2. And the side short rib plate pieces 1 are respectively substantially parallel to the central long rib plate pieces 11 arranged at an angle of approximately 45 ° with respect to the longitudinal direction of the beam.
3A, and a side 13Ab of one side short rib plate piece 13A.
Along the side A1d of the left opening A1, the side 13Ab of the other side short rib plate piece 13A along the side A2c of the right opening A2, and the side 13Aa of the side short rib plate piece 13A to the flange 10a. The sides 13Ab are welded to the web surface 10b2 along the inner surface 10a2 such that the short rib plate pieces 13A on both sides are substantially perpendicular to the web surface 10b2,
The sides 13Aa are connected to the inner surface 10a2 of the flange 10a.
To weld. The H-shaped steel beam 10 of the fourth embodiment includes a web 10b.
Between the openings A1 and A2 of the web is one surface 10b of the web.
1 first central rib piece 11 welded to 1 and other face 1
0b 2 is reinforced by a substantially X-shaped central rib body consisting of a second central long rib plate piece 11 welded to the second central long rib plate piece 11, and a portion near the left opening of the left opening on both sides of the web is one side of this portion. Face 1
The center of the web is reinforced by a rectangular rib-shaped reinforcing rib body consisting of a side short rib plate piece 13A welded to the web 0b1 and a side short rib plate piece 13A welded to the other surface 10b2. The portion near the opening on the right side of the right side of FIG. 3 has a center formed by a side short rib plate piece 13A welded to one surface 10b1 and a side short rib plate piece 13A welded to the other surface 10b2. It is reinforced with a t-shaped reinforcing rib.
【００１５】この発明の実施例５が図２２ないし図２５
に示されている。実施例５は実施例３の変形であり、側
方短リブ板片１３Ａの鋼製梁１０への取付方が実施例３
と同じで、略Ｘ字型の中央リブ体として、同型の４枚の
台形の中央短リブ板片１２Ａを使う例である。中央短リ
ブ板片１２Ａは、鋼板製で、フランジの中央部の近傍か
ら梁の長手方向に対して略４５°傾斜してフランジの内
側面に延在できるよう、図２４に示すように、平行な二
つの辺１２Ａａ、１２Ａｂ、これらの辺と直角に交わる
一つの辺１２Ａｃ、及び前記辺１２Ａａ、１２Ａｂに対
して鈍角をなして交わる一つの辺１２Ａｄからなる台形
に形成され、辺１２Ａａと辺１２Ａｃとが交わる角部に
切欠き部１２Ａｅが形成されている。Ｈ形鋼梁１０のウ
ェブの両側の左の開口Ａ１と右の開口Ａ２との間のウェ
ブ面１０ｂ１、１０ｂ２に、それぞれ４枚の中央短リブ
板片１２Ａを配し、各中央短リブ板片１２Ａの辺１２Ａ
ａを前記間隔ｘ２と同様の間隔をおいて開口Ａ１、Ａ２
の辺Ａ１ａ、Ａ１ｂ、Ａ２ａ、Ａ２ｂに沿わせ、かつそ
れらの辺１２Ａｃをフランジ１０ａの内側面１０ａ１、
１０ａ２に沿わせ、各中央短リブ板片１２Ａがウェブ面
１０ｂ１、１０ｂ２に対して略直角になるように、各中
央短リブ板片１２Ａの辺１２Ａａをウェブ面１０ｂ１、
１０ｂ２に溶接し、各中央短リブ板片１２Ａの辺１２Ａ
ｃをＨ形鋼梁１０のフランジの内側面１０ａ１、１０ａ
２に溶接し、中央が欠けた略Ｘ字型の中央リブ体を形成
する。実施例５のＨ形鋼梁１０は、ウェブ１０ｂの開口
Ａ１、Ａ２間の部分が、ウェブの両面１０ｂ１，１０ｂ
２にそれぞれ４つの中央短リブ板片１２Ａを溶接してな
る中央が欠けた略Ｘ字状の中央リブ体で補強され、ウェ
ブの両側の左の開口の左側及び右の開口の右側の開口の
近傍の部分が、これらの部分の両側にそれぞれ二つの側
方短リブ板片１３Ａを溶接してなる中央が欠けたく字形
の補強リブ体で補強されている。実施例５のものは、各
中央短リブ板片１２Ａの辺１２Ａｄを互いに溶接しない
から、溶接作業が簡単になる。また、Ｈ形鋼梁１０の左
の開口Ａ１と右の開口Ａ２との間のウェブの中央の部分
１０ｂ３はＨ形鋼梁１０の成方向に切り欠かれていない
から、前記ウェブ部分１０ｂ３は特に補強しなくても、
必要な強度や耐力があり、所望の大口径の開口Ａ１、Ａ
２のある鋼製梁を得ることができる。なお、台形の中央
短リブ板片１２Ａの代りに、図２５に示す直角三角形の
中央短リブ板片１２Ｂを使うことができる。中央短リブ
板片１２Ｂは、鋼板製であり、直角をはさむ一方の短辺
１２Ｂａの長さが前記幅ｂ２以下であり、直角をはさむ
他方の長辺１２Ｂｂが前記長さＬ２以下である直角三角
形に形成され、長辺１２Ｂｂと短辺１２Ｂａからなる角
部に切欠き部１２Ｂｅが形成されている。Embodiment 5 of the present invention is shown in FIGS.
Is shown in The fifth embodiment is a modification of the third embodiment, and the method of attaching the side short rib plate 13A to the steel beam 10 is the third embodiment.
This is an example in which four trapezoidal central short rib plate pieces 12A of the same type are used as the substantially X-shaped central rib body. As shown in FIG. 24, the central short rib plate piece 12A is made of a steel plate, and can be extended from the vicinity of the central portion of the flange to the inner side surface of the flange at an angle of approximately 45 ° with respect to the longitudinal direction of the beam. The two sides 12Aa, 12Ab, one side 12Ac intersecting at right angles to these sides, and one side 12Ad intersecting at an obtuse angle to the sides 12Aa, 12Ab are formed in a trapezoid, and the sides 12Aa and 12Ac are formed. A notch 12Ae is formed at the corner where the notch intersects. Four central short rib plates 12A are disposed on the web surfaces 10b1 and 10b2 between the left opening A1 and the right opening A2 on both sides of the web of the H-section steel beam 10, respectively. Side 12A of 12A
opening A1 and a at the same intervals as the interval x 2, A2
Along the sides A1a, A1b, A2a, A2b, and the sides 12Ac of the inner surfaces 10a1, 10a1 of the flange 10a.
The side 12Aa of each central short rib plate piece 12A is aligned with the web surface 10b1 so that each central short rib plate piece 12A is substantially perpendicular to the web surfaces 10b1 and 10b2.
10b2, and the side 12A of each central short rib plate piece 12A
c is the inner surface 10a1, 10a of the flange of the H-shaped steel beam 10.
2 to form a substantially X-shaped central rib body having a chipped center. In the H-shaped steel beam 10 of the fifth embodiment, the portion between the openings A1 and A2 of the web 10b is formed on both sides 10b1 and 10b of the web.
Each of the webs is reinforced with a substantially X-shaped central rib body having a central portion formed by welding four central short rib plate pieces 12A to the left side, the left side opening on both sides of the web, and the right side opening on the right side. The neighboring portions are reinforced with a rectangular rib-shaped reinforcing rib body formed by welding two side short rib plate pieces 13A to both sides of each of these portions. In the case of the fifth embodiment, since the sides 12Ad of each of the center short rib plate pieces 12A are not welded to each other, the welding operation is simplified. Further, since the central portion 10b 3 of the web between the left opening A1 and the right of the opening A2 of the H-shaped steel beam 10 is not cut in the formation direction of the H-shaped steel beam 10, the web portion 10b 3 Does not require special reinforcement,
Openings A1 and A with the required strength and proof strength and desired large diameter
2 can be obtained. Instead of the trapezoidal center short rib plate piece 12A, a right triangle triangular center short rib plate piece 12B shown in FIG. 25 can be used. Central short rib plate piece 12B is made of steel plate, and the length of one short side 12Ba sandwiching the right angle less than the width b 2, the other long side 12Bb is the length L 2 below sandwiching the right angle It is formed in a right-angled triangle, and a cutout portion 12Be is formed at a corner formed by a long side 12Bb and a short side 12Ba.
【００１６】この発明の実施例６が図２６に示されてい
る。幅ｂ１で高さｈのＨ形鋼梁１０のウェブ１０ｂの部
分の所望位置に、梁の長手方向に間隔をおいて互いに近
接して二つの円形の開口Ａ１、Ａ２を形成する。二つの
円形の開口Ａ１、Ａ２の上下の開口縁とフランジ１０ａ
の内側面１０ａ１と間にフランジ１０ａとウェブ１０ｂ
との連結部に形成された円弧状部が残るように、それら
の間に間隔をあける。Ｈ形鋼梁１０の図示の表側のウェ
ブ面１０ｂ１と裏側のウェブ面の二つの開口Ａ１、Ａ２
の間の部分に、各開口Ａ１、Ａ２の口縁部から少々離し
て、中央長リブ板片１１を梁の長手方向に対して略４５
°傾斜させて配し、かつ二つの中央短リブ板片１２を中
央長リブ板片１１に対して直角に配し、各中央長短リブ
板片１１、１２を、実施例１の同様に、ウェブ面および
フランジの内側面に溶接し、中央短リブ板片１２の短辺
１２ｂを中央長リブ板片１１の中央の両側部に溶接し、
ウェブの両側に中央長リブ板片１１と中央短リブ板片１
２からなる略Ｘ字型の中央リブ体を形成したものであ
る。実施例６のものは、二つの開口Ａ１、Ａ２が円形で
あるから、左の開口Ａ１の左側の部分および右の開口Ａ
２の右側の部分を側方リブ体により補強しなくとも、相
当な荷重に耐えることができる。そのため、大きな強
度、耐力及び繰り返し荷重における耐力維持が要求され
ない小梁等に使うことができる。この発明の実施例７が
図２７に示されている。実施例７は実施例１の略四角形
の開口を円形の開口Ａ１、Ａ２に代えただけのものであ
る。この実施例７と同様に、実施例２ないし５のものに
おいても、略四角形の開口を円形の開口に代えることが
できる。これらの場合は、円形の開口の直径を、例え
ば、略四角形の開口の内接円の直径と略等しくするとよ
い。A sixth embodiment of the present invention is shown in FIG. The desired position of the portion of the web 10b of the height h H-shaped steel beam 10 in the width b 1, in close proximity to each other at intervals in the longitudinal direction of the beam to form two circular openings A1, A2. Upper and lower opening edges of two circular openings A1, A2 and flange 10a
Flange 10a and a web 10b between the inner surface 10a 1 and
There is an interval between them so that an arc-shaped portion formed at a connection portion between the two remains. Two openings of the front of the web surface 10b 1 and the back side of the web surface of the illustrated H-shaped steel beam 10 A1, A2
Between the edges of the openings A1 and A2, the central long rib plate piece 11 is set at approximately 45 degrees with respect to the longitudinal direction of the beam.
° and two central short rib plate pieces 12 are disposed at right angles to the central long rib plate piece 11, and each of the central short rib plate pieces 11, 12 The short side 12b of the central short rib plate piece 12 is welded to both sides of the center of the central long rib plate piece 11,
Central long rib plate 11 and central short rib plate 1 on both sides of the web
2 in which a substantially X-shaped central rib body is formed. In the sixth embodiment, since the two openings A1 and A2 are circular, the left portion of the left opening A1 and the right opening A
Even if the right part of 2 is not reinforced by the side rib body, it can withstand a considerable load. Therefore, it can be used for a small beam or the like which does not require high strength, proof strength and proof strength maintenance under repeated load. Embodiment 7 of the invention is shown in FIG. The seventh embodiment is different from the first embodiment only in that the substantially square opening is replaced with circular openings A1 and A2. Similarly to the seventh embodiment, in the second to fifth embodiments, the substantially rectangular opening can be replaced with a circular opening. In these cases, the diameter of the circular opening may be, for example, substantially equal to the diameter of the inscribed circle of the substantially rectangular opening.
【００１７】[0017]
【発明の効果】（イ）請求項１に係る発明の梁の製造法
は、ウェブの二つの開口の間の部分の一側に形成した略
Ｘ字型の中央リブ体とその他側に形成した略Ｘ字型の中
央リブ体により、ウェブの二つの開口の間の部分を両側
から補強するから、両側の略Ｘ字型の中央リブ体のトラ
ス効果により、その二つの開口のある部分の梁を充分に
補強することができ、また、ウェブの一側の左の開口の
左側の部分及び右の開口の右側の部分の各開口の近傍の
部分に溶接した側方く字形リブ板片と、ウェブの他側の
左の開口の左側の部分及び右の開口の右側の部分の各開
口の近傍の部分に溶接した側方く字形リブ板片とによ
り、ウェブの左の開口の左側及び右の開口の右側の部分
を両側から補強するから、十分な剛性、耐力、変形能力
等のある大口径の開口のある梁を安価で提供できる。 （ロ）請求項１に係る発明の梁の製造法は、四角形の４
隅部を円弧にした略四角の開口又は前記四角形に内接す
る円形の開口をウェブに梁の長手方向に間隔をおいて左
と右の二つ設けて、二つの開口を連通させることがない
から、二つの開口の開設部のウェブの強度の過度の低下
を抑えることができる。 （ハ）請求項１に係る発明の梁の製造法は、四角形の４
隅部を円弧にした略四角の開口又は前記四角形に内接す
る円形の開口をウェブに梁の長手方向に間隔をおいて左
と右の二つ設けて、ウェブの一側及び他側の部分に、鋼
板製の中央長リブ板片、中央短リブ板片及び側方く字形
リブ板片の各リブ片を、前記開口の周縁部から少々離し
て、梁の長手方向に対して略４５°傾斜しかつそれらの
板面がウェブ面に対して略直角になるように、各リブ片
をウェブ面及び上又は下フランジの内側面に溶接するか
ら、二つの開口を狭めることがなく、また、各リブ片と
ウェブ面及び上下フランジの内側面との溶接面積を大き
くすることができ、中央長リブ板片、中央短リブ板片及
び側方く字形リブ板片をウェブ及びフランジに強固に接
合することができる。According to the method for manufacturing a beam according to the first aspect of the present invention, a substantially X-shaped central rib body formed on one side of a portion between two openings of a web and the other side are formed. Since the substantially X-shaped central rib body reinforces the portion between the two openings of the web from both sides, the truss effect of the substantially X-shaped central rib body on both sides allows the beam at the portion having the two openings. And a laterally-shaped rib plate piece welded to a portion near each opening on the left side of the left opening on one side of the web and on the right side of the right opening, The left and right sides of the left opening of the web are provided by side ribbed strips welded to the left side of the left opening on the other side of the web and the right side of the right opening near each opening. Because the right side of the opening is reinforced from both sides, large-diameter openings with sufficient rigidity, proof strength, A beam with a can be provided in a low cost. (B) The method of manufacturing a beam according to the first aspect of the present invention includes
A substantially square opening having a circular arc at the corner or a circular opening inscribed in the square is provided on the web at the left and right at intervals in the longitudinal direction of the beam, so that the two openings do not communicate with each other. In addition, it is possible to suppress an excessive decrease in the strength of the web at the opening of the two openings. (C) The method of manufacturing a beam according to the first aspect of the present invention includes
A substantially square opening having a circular arc at the corner or a circular opening inscribed in the square is provided on the web at left and right sides at intervals in the longitudinal direction of the beam, and on one side and the other side of the web. Each of the ribs of the central long rib plate, the central short rib plate and the side rib-shaped plate made of steel plate is slightly separated from the peripheral edge of the opening, and is inclined at approximately 45 ° with respect to the longitudinal direction of the beam. Each rib piece is welded to the web surface and the inner surface of the upper or lower flange so that the plate surfaces are substantially perpendicular to the web surface, so that the two openings are not narrowed, and The welding area between the rib piece and the web surface and the inner surface of the upper and lower flanges can be increased, and the central long rib plate piece, the central short rib plate piece and the side rib-shaped rib plate pieces are firmly joined to the web and flange. be able to.
【００１８】（ニ）請求項２に係る発明の梁の製造法
は、側方短リブ板片をウェブの中央部の近傍から梁の長
手方向に対して略４５°傾斜してフランジの内側面にわ
って延在できるように鋼板で形成し、ウェブの一側及び
他側の左の開口の左側及び右の開口の右側の部分に、そ
れぞれ１対の側方端リブ板片を、左又は右の開口の周縁
部から少々離して、その一方がウェブの中央部の近傍か
ら梁の長手方向に対して略４５°上方に傾斜しその他方
がウェブの中央部の近傍から梁の長手方向に対して略４
５°下方に傾斜しかつそれらの板面がウェブ面に対して
略直角になるように、ウェブ面及び上又は下フランジの
内側面に溶接して、１対の側方端リブ板片により中央が
欠けたく字形の補強リブ体を構成するから、上記（イ）
〜（ハ）の効果を奏し得るだけでく、く字形の補強リブ
体の形成のための、リブ板片の溶接作業等が容易にな
る。ウェブの一側及び他側の左の開口の左側及び右の開
口の右側の開口の隅部の近傍のウェブの部分は梁の成方
向に切り欠かれていないから、これらのウェブの部分は
特に補強しなくても、必要な強度や耐力があり、梁の開
口の大きさを所望の大きさにすることができる。 （ホ）請求項３に係る発明の梁の製造法は、上記（ロ）
及び（ハ）の効果を奏し得るだけでなく、ウェブの二つ
の開口の間の部分の一側に左が上で右が下になって梁の
長手方向に対して略４５°傾斜して溶接した第１中央長
リブ板片と、その他側に右が上で左が下になって梁の長
手方向に対して略４５°傾斜して溶接した第２中央長リ
ブ板片とでウェブを挟んで略Ｘ字型の中央リブ体を形成
して、ウェブの二つの開口の間の部分を補強するから、
その略Ｘ字型の中央リブ体のトラス効果により、その二
つの開口のある部分の梁を必要なだけ補強することがで
き、そのうえ、ウェブの一側の左の開口の左側（又は右
の開口の右側）の部分の開口の近傍の部分に側方く字形
形リブ板片を溶接し、ウェブの他側の右の開口の右側
（又は左の開口の左側）の開口の近傍の部分に側方く字
形形リブ板片を溶接し、ウェブの左の開口の左側及び右
の開口の右側の部分をその一つの側に溶接した側方く字
形形リブ板片で補強するから、必要な剛性、耐力、変形
能力等のある大口径の開口のある梁を比較的に簡単に製
作できる。請求項３に係る発明の梁の製造法は、略Ｘ字
型の中央リブ体を形成するための資材及び手数が、請求
項１、２、５及び６に係る発明の梁の製造法に比して、
少なくなる。(D) The method for manufacturing a beam according to the second aspect of the present invention is characterized in that the side short rib plate is inclined from the vicinity of the central portion of the web by approximately 45 ° with respect to the longitudinal direction of the beam, and the inner side surface of the flange is formed. A pair of side end rib plate pieces on the left side of the left opening on the one side of the web and on the right side of the right opening on the other side, respectively. Slightly away from the periphery of the right opening, one of them is inclined approximately 45 ° above the longitudinal direction of the beam from near the center of the web, and the other is in the longitudinal direction of the beam from near the center of the web. About 4
Welded to the web surface and the inner surface of the upper or lower flange so that they slant 5 ° downward and their plate surfaces are substantially perpendicular to the web surface, and are centrally formed by a pair of side end rib plate pieces. (A) above, because it constitutes a rib-shaped reinforcing rib body
Not only can the effects of (c) be achieved, but also the welding work of the rib plate pieces and the like for forming the U-shaped reinforcing rib body becomes easy. These web sections are particularly notable since the sections of the web near the corners of the left and right openings of the left and right openings on one side and the other side of the web are not cut away in the direction of beam formation. Even without reinforcement, there is required strength and proof stress, and the size of the opening of the beam can be made a desired size. (E) The method for manufacturing a beam according to the third aspect of the present invention includes the method (b)
In addition to the effects of (c) and (c), welding on one side of the portion between the two openings of the web with the left side up and the right side down at an angle of approximately 45 ° with respect to the longitudinal direction of the beam. The web is sandwiched between the first central rib piece and the second central rib piece which are welded to the other side at an angle of approximately 45 ° with respect to the longitudinal direction of the beam, with the right side up and the left side down. To form a substantially X-shaped central rib body to reinforce the portion between the two openings of the web,
The truss effect of the generally X-shaped central rib body can reinforce the beam in the portion with the two openings as needed, and furthermore, the left (or right) opening of the left opening on one side of the web. The right side of the portion of the web is welded to the portion near the opening near the opening, and the side of the web is connected to the portion near the opening on the right side of the right opening (or the left side of the left opening). The required stiffness is required because the rectangular ribs are welded and the left side of the left opening of the web and the right part of the right opening are reinforced with the lateral ribs welded to one side. A beam having a large-diameter opening having a proof strength and a deformability can be manufactured relatively easily. According to the method of manufacturing a beam according to the third aspect of the present invention, the material and the number of steps for forming the substantially X-shaped central rib body are smaller than those of the method of manufacturing the beam according to the first, second, fifth and sixth aspects. do it,
Less.
【００１９】（ヘ）請求項４に係る発明の梁の製造法
は、上記（ロ）、（ハ）及び（ホ）の効果を奏し得るだ
けでなく、側方短リブ板片をウェブの中央部の近傍から
梁の長手方向に対して略４５゜傾斜してフランジの内側
面にわたって延在できるように鋼板で形成し、前記側方
短リブ板片を、ウェブの一側の左の開口の左側又は右の
開口の右側の下半分又は上半分の部分に、ウェブの一側
の二つの開口の間の部分に左が上で右が下になって梁の
長手方向に対して略４５゜傾斜して溶接した第１中央長
リブ板片と略平行にそれぞれ溶接し、前記側方短リブ板
片を、ウェブの他側の左の開口の左側又は右の開口の右
側の上半分又は下半分の部分に、ウェブの他側の二つの
開口の間の部分に右が上で左が下になって梁の長手方向
に対して略４５゜傾斜して溶接した第２中央長リブ板片
と略平行にそれぞれ溶接し、一側に溶接した側方短リブ
板片と他側に溶接した側方短リブ板片とにより中央が欠
けたく字形の補強リブ体を形成し、この中央が欠けたく
字形の補強リブ体により梁のウェブの左の開口の左側及
び右の開口の右側の各開口の近傍の部分を補強するか
ら、これらの部分を補強するための資材及び手数が、請
求項１〜３に係る発明の梁の製造法に比して、少なくな
る。 （ト）請求項５に係る発明の梁の製造法は、上記
（ロ）、（ハ）及び（ホ）の効果を奏し得るだけでな
く、中央短リブ板片をフランジの中央部の近傍から梁の
長手方向に対して略４５゜傾斜してフランジの内側面に
わたって延在できるように鋼板で形成し、ウェブの一側
又は他側の左右の開口の間の部分に、４つの中央短リブ
板片を、左右の開口の周縁部から少々離して、それらの
一端がウェブの中央で互いに少々離れて梁の長手方向に
対して略４５゜上方又は下方に傾斜して放射状になりか
つその板面がウェブ面に対して略直角になるように、ウ
ェブ面及び上又は下フランジの内側面に溶接して、中央
が欠けた略Ｘ字型の中央リブ体を形成するから、中央短
リブ板片のウェブへの溶接作業が容易になり、ウェブの
一側又は他側の左右の開口の間の部分に、略Ｘ字型の中
央リブ体を形成するための資材及び手数が、請求項１、
２及び６に係る発明の梁の製造法に比して、少なくな
る。 （チ）請求項６に係る発明の梁の製造法は、上記
（ロ）、（ハ）及び（ホ）の効果を奏し得るだけでな
く、ウェブの二つの開口の間の部分のみを、その一側に
形成した略Ｘ字型の中央リブ体とその他側に形成した略
Ｘ字型の中央リブ体とにより、ウェブの左右の開口の間
の部分を両側から補強するだけで、ウェブの左の開口の
左側及び右の開口の右側の開口の近傍の部分に補強リブ
体を全く設けないから、その補強リブ体を形成するため
の資材及び手数を省くことがでできる。梁がＨ形断面の
鋼製の小梁で、二つの開口の形状を円形にした場合に
は、ウェブの左の開口の左側及び右の開口の右側の開口
の近傍の部分に補強リブ体を全く設けなくても、両側の
略Ｘ字型の中央リブ体のトラス効果による補強だけで、
所望の剛性、耐力、変形能力等を有する大口径の開口の
ある梁を得ることができる。そのため、請求項６の製造
法は、大きな強度、耐力及び繰り返し荷重における耐力
維持が要求されない小梁等の製造に適している。 （リ）請求項７に係る発明のように、Ｈ形鋼梁に接合す
るリブ板片の前記梁のウェブとフランジとの結合部分の
円弧状部分に対向する角部に切欠き部を形成すると、リ
ブ板片のウェブ及びフランジへの溶接作業がしやすくな
る。(F) The method for manufacturing a beam according to the fourth aspect of the present invention can not only achieve the effects of (b), (c) and (e) above, but also place the side short rib plate piece at the center of the web. part inclined approximately 45 degrees relative to the longitudinal direction of the beam from the vicinity of the formed steel plate to allow the extending I was I the inner surface of the flange, the side short rib plate piece, a web on one side In the lower half or upper half of the left side of the left opening or the right half of the right opening, the part between the two openings on one side of the web with the left side up and the right side down with respect to the longitudinal direction of the beam. About 45 ° and welded substantially in parallel with the first central long rib plate piece which was welded at an angle of 45 °, and the side short rib plate piece was placed on the left side of the left opening on the other side of the web or on the right side of the right opening. In the upper or lower half, between the two openings on the other side of the web, the right is up and the left is down, approximately 45 ° to the longitudinal direction of the beam The central short rib plate piece welded to one side and the side short rib plate piece welded to one side and the other side short rib plate piece welded substantially parallel to the second central long rib plate piece A reinforcing rib body is formed, and the central portion of the rib-shaped reinforcing rib body reinforces the portions near the respective openings on the left side of the left opening and the right side of the right opening of the beam web. The number of materials and time required to perform the method are reduced as compared with the method of manufacturing a beam according to the first to third aspects of the present invention. (G) The method of manufacturing a beam according to the fifth aspect of the present invention can not only achieve the effects of (b), (c), and (e) above, but also allows the center short rib plate piece to be moved from the vicinity of the center of the flange. Inclined approximately 45 ° with respect to the longitudinal direction of the beam and on the inner surface of the flange
Over formed of a steel plate so that it can extend, a portion between the one side or the other side of the right and left of the opening of the web, the four central short rib plate piece, a little away from the periphery of the left and right of the opening, which The ends of the web are slightly distant from each other at the center of the web and are inclined approximately 45 ° upward or downward with respect to the longitudinal direction of the beam so as to be radial and their plate surfaces are substantially perpendicular to the web surface. And welding to the inner surface of the upper or lower flange to form a substantially X-shaped central rib body having a chipped center, thereby facilitating the welding of the central short rib plate piece to the web, and one side of the web. Alternatively, the material and the number of steps for forming a substantially X-shaped central rib body in a portion between the left and right openings on the other side are as described in claim 1,
The number is reduced as compared with the method of manufacturing the beam according to the inventions 2 and 6. (H) The method for manufacturing a beam according to the invention according to claim 6 can not only exert the effects of (b), (c), and (e) above, but also only the portion between the two openings of the web, With a substantially X-shaped central rib formed on one side and a substantially X-shaped center rib formed on the other side, the portion between the left and right openings of the web is merely reinforced from both sides, and the left side of the web is left. Since no reinforcing ribs are provided in the vicinity of the opening on the left side of the opening and the opening on the right side of the opening on the right side, it is possible to omit the materials and labor required for forming the reinforcing ribs. When the beam is a steel beam with an H-shaped cross section and the shape of the two openings is circular, a reinforcing rib body is provided at a portion near the left opening of the left opening of the web and the right opening of the right opening. Even if it is not provided at all, only reinforcement by the truss effect of the substantially X-shaped central rib body on both sides,
A beam having a large-diameter opening having desired rigidity, proof stress, deformation capacity, and the like can be obtained. Therefore, the manufacturing method according to claim 6 is suitable for manufacturing a small beam or the like that does not require large strength, proof strength and proof strength maintenance under repeated load. (I) As in the invention according to claim 7 , joining to an H-shaped steel beam
Of the joint between the web and the flange of the beam of the rib plate piece
When a notch is formed at a corner portion facing the arc-shaped portion, welding work of the rib plate piece to the web and the flange becomes easy.
【図１】本発明の実施例１に使う四角形の開口を形成し
た断面Ｈ字形の鋼製梁の正面図FIG. 1 is a front view of a steel beam having an H-shaped cross section and having a rectangular opening used in Example 1 of the present invention.
【図２】図１のものをそのＡ−Ａ線で断面した側面図FIG. 2 is a side view of FIG. 1 taken along the line AA.
【図３】第１実施例に使う中央長リブ片の平面図FIG. 3 is a plan view of a central long rib piece used in the first embodiment.
【図４】第１実施例に使う中央短リブ片の平面図FIG. 4 is a plan view of a center short rib piece used in the first embodiment.
【図５】第１実施例に使う側方リブ片の素材の平面図FIG. 5 is a plan view of a material of a side rib piece used in the first embodiment.
【図６】第１実施例に使う側方リブ片の正面図FIG. 6 is a front view of a side rib piece used in the first embodiment.
【図７】実施例１の四角形の開口を備えた鋼製梁の正面
図FIG. 7 is a front view of a steel beam having a square opening according to the first embodiment.
【図８】図７のものをそのＢ−Ｂ線で断面した側面図FIG. 8 is a side view of FIG. 7 taken along the line BB.
【図９】図８の要部を拡大した断面図9 is an enlarged sectional view of a main part of FIG. 8;
【図１０】図７のものをそのＣ−Ｃ線で断面した側面図FIG. 10 is a side view of FIG. 7 taken along the line CC.
【図１１】図７のものをそのＤ−Ｄ線で断面した断面図11 is a cross-sectional view of FIG. 7 taken along the line DD.
【図１２】実施例１の四角形の開口を備えた鋼製梁の力
学的性能を示す図FIG. 12 is a diagram showing the mechanical performance of a steel beam having a rectangular opening of Example 1.
【図１３】実施例２の四角形の開口を備えた鋼製梁の正
面図FIG. 13 is a front view of a steel beam having a square opening according to the second embodiment.
【図１４】図１３のものをそのＥ−Ｅ線で断面した側面
図14 is a side view of FIG. 13 taken along the line EE.
【図１５】実施例３の四角形の開口を備えた鋼製梁の正
面図FIG. 15 is a front view of a steel beam having a square opening according to the third embodiment.
【図１６】図１５のものをそのＦ−Ｆ線で断面した側面
図FIG. 16 is a side view of FIG. 15 taken along the line FF.
【図１７】実施例３に使う直角三角形の側方リブ片の平
面図FIG. 17 is a plan view of a right-angled triangular side rib piece used in the third embodiment.
【図１８】実施例３に使う台形の側方リブ片の平面図FIG. 18 is a plan view of trapezoidal side rib pieces used in the third embodiment.
【図１９】実施例３に使う矩形の側方リブ片の平面図FIG. 19 is a plan view of a rectangular side rib piece used in the third embodiment.
【図２０】実施例４の四角形の開口を備えた鋼製梁の正
面図FIG. 20 is a front view of a steel beam having a square opening according to the fourth embodiment.
【図２１】図２０のものをそのＧ−Ｇ線で断面した側面
図21 is a side view of FIG. 20 taken along the line GG.
【図２２】実施例５の四角形の開口を備えた鋼製梁の正
面図FIG. 22 is a front view of a steel beam having a square opening according to the fifth embodiment.
【図２３】図２２のものをそのＨ−Ｈ線で断面した側面
図23 is a side view of FIG. 22 taken along the line HH.
【図２４】実施例５に使う台形の中央短リブ片の平面図FIG. 24 is a plan view of a trapezoidal central short rib piece used in the fifth embodiment.
【図２５】実施例５に使う直角三角の中央短リブ片の平
面図FIG. 25 is a plan view of a right-angled triangular center short rib piece used in the fifth embodiment.
【図２６】実施例６の円形の開口を備えた鋼製梁の正面
図FIG. 26 is a front view of a steel beam having a circular opening according to the sixth embodiment.
【図２７】実施例７の円形の開口を備えた鋼製梁の正面
図FIG. 27 is a front view of a steel beam having a circular opening according to the seventh embodiment.
【図２８】従来の円形の開口を備えた鋼製梁の正面図FIG. 28 is a front view of a conventional steel beam having a circular opening.
【図２９】図２８のものをそのＪ−Ｊ線で断面した側面
図FIG. 29 is a side view of FIG. 28 taken along the line JJ.
【図３０】従来の他の円形の開口を備えた鋼製梁の正面
図FIG. 30 is a front view of another conventional steel beam having a circular opening.
【図３１】図２９のものをそのＫ−Ｋ線で断面した側面
図31 is a side view of FIG. 29 taken along the line KK.
１０ Ｈ形鋼梁 １０ａ フランジ １０ａ１ フランジの内側面 １０ａ２ フランジの内側面 １０ｂ ウェブ １０ｂ１ 一側のウェブ面 １０ｂ２ 他側のウェブ面 １１ 中央長リブ板片 １１ｅ 切欠き部 １２，１２Ａ 中央短リブ板片 １２ｅ 切り欠き部 １３ 側方く字形リブ板片 １３ｅ 切欠き部 １３Ａ 側方短リブ板片 Ａ１ 開口 Ａ２ 開口 Reference Signs List 10 H-beam 10a Flange 10a1 Inner surface of flange 10a2 Inner surface of flange 10b Web 10b1 Web surface on one side 10b2 Web surface on the other side Notch 13 Side ribbed piece 13e Notch 13A Short side rib piece A1 Opening A2 Opening
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野上 邦宏 東京都中央区銀座八丁目21番１号 竹中 工務店 東京本店内 (72)発明者 青山 伸介 東京都中央区銀座八丁目21番１号 竹中 工務店 東京本店内 (72)発明者 木村 衛 東京都江東区南砂二丁目５番14号 竹中 工務店 技術研究所内 (72)発明者 金子 洋文 東京都江東区南砂二丁目５番14号 竹中 工務店 技術研究所内 (56)参考文献 特開 平２−232451（ＪＰ，Ａ) 実公 昭３−428（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) E04C 3/00 - 3/46 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kunihiro Nogami 8-21-1, Ginza, Chuo-ku, Tokyo Takenaka Corporation Inside the Tokyo Main Store (72) Inventor Shinsuke Aoyama 8-2-1-1, Ginza, Chuo-ku, Tokyo Takenaka Inside the Tokyo office (72) Inventor Mamoru Kimura 2-14-14 Minamisuna, Koto-ku, Tokyo Takenaka Corporation Technical Research Institute (72) Inventor Hirofumi Kaneko 2-14-14 Minamisuna, Koto-ku, Tokyo Takenaka Corporation (56) References JP-A-2-232451 (JP, A) Jikken Sho 3-428 (JP, Y1) (58) Fields investigated (Int. Cl. 7 , DB name) E04C 3/00 -3/46
Claims (7)
ェブとを備え、ウェブの部分に二つの大口径の開口を近
接して形成したＨ形断面の鋼製梁の製造法において、鋼
製梁に溶接するリブ板片として中央長リブ板片、中央短
リブ板片及び側方く字形リブ板片を用い、中央長リブ板
片はウェブに沿って梁の長手方向に対して略４５゜傾斜
して上下フランジ間に延在できるように鋼板で形成さ
れ、中央短リブ板片はウェブの略中央から梁の長手方向
に対して略４５゜傾斜してフランジの内側面にわたって
延在できるように鋼板で形成され、側方く字形リブ板片
はその二つの辺がウェブの中央部から梁の長手方向に対
して略４５゜傾斜してフランジの内側面にわたって延在
できるように鋼板で形成され、その一方の対角線がウェ
ブの中央を通る梁の長手方向の線に一致し、その他方の
対角線が梁の長手方向に対して直角な線に一致する四角
形の４隅部を円弧にした略四角の開口又は前記四角形の
内接円と略等しい円形の開口をウェブに梁の長手方向に
間隔をおいて左と右の二つ設け、ウェブの一側の左右の
開口の間の部分に、前記中央長リブ板片を、左右の開口
の周縁部から少々離して、これが梁の長手方向に対して
略４５゜傾斜しかつその板面がウェブ面に対して略直角
になるように、ウェブ面及び上下フランジの内側面に溶
接し、１対の中央短リブ板片を、左右の開口の周縁部か
ら少々離して、前記中央長リブ板片の中央の上側及び下
側から中央長リブ板片に対して略直角に梁の長手方向に
対して略４５゜上方及び下方に傾斜させかつそれらの板
面がウェブ面に対して略直角になるように、中央長リブ
板片、ウェブ面及び上又は下フランジの内側面に溶接し
て略Ｘ字型の中央リブ体を形成し、ウェブの一側の左の
開口の左側の部分に、側方く字形リブ板片を、左の開口
の周縁部から少々離して、その一方の辺がウェブの中央
部から梁の長手方向に対して略４５゜上方に傾斜しその
他方の辺がウェブの中央部から梁の長手方向に対して略
４５゜下方に傾斜しかつそれらの板面がウェブ面に対し
て略直角になるように、ウェブ面及び上下フランジの内
側面に溶接し、ウェブの一側の右の開口の右側の部分
に、側方く字形リブ板片を、右の開口の周縁部から少々
離して、その一方の辺がウェブの中央部から梁の長手方
向に対して略４５゜上方に傾斜しその他方の辺がウェブ
の中央部から梁の長手方向に対して略４５゜下方に傾斜
しかつそれらの板面がウェブ面に対して略直角になるよ
うに、ウェブ面及び上下フランジの内側面に溶接し、ウ
ェブの他側の左右の開口の間の部分に前記と同じやり方
で略Ｘ字型の中央リブ体を形成し、ウェブの他側の左の
開口の左側及び右の開口の右側の部分に前記と同じやり
方で側方く字形リブ板片を溶接することを特徴とする大
口径の開口のある梁の製造法。1. A and a web connecting the upper and lower flanges upper and lower flanges, in the production method of the steel beams H-shaped cross section formed proximate the opening of the two large diameter to a portion of the web, steel
Middle long rib plate, short center rib plate to be welded to beam
With rib plate piece and the side rather shaped rib plate pieces, it is formed of a steel plate so that the central length rib plate piece may extend between the upper and lower flanges inclined approximately 45 degrees relative to the longitudinal direction of the beam along the web
Is a central short rib plate pieces is formed of a steel plate so that it can extend I was I the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam from substantially the center of the web, the side rather shaped rib Slab
Web is its two sides are formed of a steel plate so that it can extend I was I the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam from the center of the web, one of the diagonals
Coincides with the longitudinal line of the beam passing through the center of the
A square whose diagonal coincides with a line perpendicular to the longitudinal direction of the beam
A substantially square opening with four corners in the shape of a circular arc or the square
A circular opening approximately equal to the inscribed circle is formed on the web in the longitudinal direction of the beam.
Two pieces of left and right are provided at an interval, and the central long rib plate piece is slightly separated from the periphery of the left and right openings in a portion between the left and right openings on one side of the web, and this is the longitudinal direction of the beam. To the web surface and the inner surfaces of the upper and lower flanges so that the plate surface is substantially perpendicular to the web surface. A little away from the peripheral edge of the center long rib plate piece, and incline approximately 45 ° upward and downward with respect to the longitudinal direction of the beam at a right angle to the center long rib plate piece from above and below the center of the center long rib plate piece; A central X-shaped central rib body is formed by welding the central long rib plate piece, the web surface, and the inner surface of the upper or lower flange so that their plate surfaces are substantially perpendicular to the web surface. On the left side of the left opening on one side, place a side-shaped rib plate piece slightly from the periphery of the left opening. Then, one side is inclined approximately 45 ° upward from the center of the web with respect to the longitudinal direction of the beam, and the other side is inclined approximately 45 ° downward from the center of the web with respect to the longitudinal direction of the beam. And weld them to the web surface and the inner surfaces of the upper and lower flanges so that their plate surfaces are substantially perpendicular to the web surface. The plate piece is slightly separated from the peripheral edge of the right opening, one side of which is inclined approximately 45 ° upward from the center of the web with respect to the longitudinal direction of the beam, and the other side is the beam from the center of the web. Are welded to the web surface and the inner surfaces of the upper and lower flanges so as to be inclined approximately 45 ° downward with respect to the longitudinal direction of the web and so that their plate surfaces are substantially perpendicular to the web surface. A substantially X-shaped central rib body is formed in the portion between the openings in the same manner as described above. Preparation of the beam with the opening of a large diameter, characterized in that welding the other side of the left of the left and right of the right-shaped rib plates piece rather laterally in the same manner as the on portion of the opening of the aperture of the probe.
ェブとを備え、ウェブの部分に二つの大口径の開口を近
接して形成したＨ形断面の鋼製梁の製造法において、鋼
製梁に溶接するリブ板片として中央長リブ板片、中央短
リブ板片及び側方短リブ板片を用い、中央長リブ板片は
ウェブに沿って梁の長手方向に対して略４５゜傾斜して
上下フランジ間に延在できるように鋼板で形成され、中
央短リブ板片はウェブの略中央から梁の長手方向に対し
て略４５゜傾斜してフランジの内側面にわたって延在で
きるように鋼板で形成され、側方短リブ板片はウェブの
中央部の近傍から梁の長手方向に対して略４５゜傾斜し
てフランジの内側面にわたって延在できるように鋼板で
形成され、その一方の対角線がウェブの中央を通る梁の
長手方向の線に一致し、その他方の対角線が梁の長手方
向に対して直角な線に一致する四角形の４隅部を円弧に
した略四角の開口又は前記四角形の内接円と略等しい円
形の開口をウェブに梁の長手方向に間隔をおいて左と右
の二つ設け、ウェブの一側の左右の開口の間の部分に、
前記中央長リブ板片を、左右の開口の周縁部から少々離
して、これが梁の長手方向に対して略４５゜傾斜しかつ
その板面がウェブ面に対して略直角になるように、ウェ
ブ面及び上下フランジの内側面に溶接し、１対の中央短
リブ板片を、左右の開口の周縁部から少々離して、前記
中央長リブ板片の中央の上側及び下側から中央長リブ板
片に対して略直角に梁の長手方向に対して略４５゜上方
又は下方にそれぞれ傾斜しかつそれらの板面がウェブ面
に対して略直角になるように、中央長リブ板片、ウェブ
面及び上又は下フランジの内側面に溶接して略Ｘ字型の
中央リブ体を形成し、ウェブの一側の左の開口の左側の
部分に、１対の側方短リブ板片を、左の開口の周縁部か
ら少々離して、その一方がウェブの中央部の近傍から梁
の長手方向に対して略４５゜上方に傾斜しその他方がウ
ェブの中央部の近傍から梁の長手方向に対して略４５゜
下方に傾斜しかつそれらの板面がウェブ面に対して略直
角になるように、ウェブ面及び上又は下フランジの内側
面に溶接し、ウェブの一側の右の開口の右側の部分に、
１対の側方短リブ板片を、右の開口の周縁部から少々離
して、その一方がウェブの中央部の近傍から梁の長手方
向に対して略４５゜上方に傾斜しその他方がウェブの中
央部の近傍から梁の長手方向に対して略４５゜下方に傾
斜しかつそれらの板面がウェブ面に対して略直角になる
ように、ウェブ面及び上又は下フランジの内側面に溶接
し、ウェブの他側の左右の開口の間の部分に前記と同じ
やり方で略Ｘ字型の中央リブ体を形成し、ウェブの他側
の左の開口の左側及び右の開口の右側の部分に前記と同
じやり方で１対の側方短リブ板片を溶接することを特徴
とする大口径の開口のある梁の製造法。Wherein a web connecting the upper and lower flanges upper and lower flanges, in the production method of the steel beams H-shaped cross section formed proximate the opening of the two large diameter to a portion of the web, steel
Middle long rib plate, short center rib plate to be welded to beam
Using a rib plate piece and a lateral short rib plate piece, the central long rib plate piece is made of a steel plate so that it can extend between the upper and lower flanges at an angle of approximately 45 ° with respect to the longitudinal direction of the beam along the web. in it is formed, the central short rib plate pieces is formed of a steel plate so that it can extend I was I the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam from substantially the center of the web, the lateral short rib plate pieces is formed of a steel plate so that it can extend I was I the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam from the vicinity of the central portion of the web, diagonal webs of the one Of the beam passing through the center
Coincides with the longitudinal line, the other diagonal is the longitudinal direction of the beam
Four corners of a rectangle that matches a line perpendicular to the direction
A substantially square opening or a circle approximately equal to the inscribed circle of the square
Left and right spaced openings in the longitudinal direction of the beam with web shaped openings
In the part between the left and right openings on one side of the web,
The center long rib plate piece is slightly separated from the peripheral edge portions of the left and right openings, and the web is inclined so as to be approximately 45 ° with respect to the longitudinal direction of the beam and its plate surface is substantially perpendicular to the web surface. The central short rib plate is welded to the upper surface and the upper and lower flanges, and a pair of central short rib plates are slightly separated from the peripheral portions of the left and right openings, and the central long rib plate is positioned above and below the center of the central long rib plate. The center-long rib plate piece and the web surface are inclined substantially at right angles to the pieces, approximately 45 ° upward or downward with respect to the longitudinal direction of the beam, and their plate surfaces are substantially perpendicular to the web surface. And welding to the inner surface of the upper or lower flange to form a substantially X-shaped central rib body, and a pair of side short rib plate pieces on the left side of the left opening on one side of the web, A little away from the periphery of the opening, one of which is close to the center of the web, The web is inclined approximately 45 ° upward and the other is inclined approximately 45 ° downward with respect to the longitudinal direction of the beam from near the center of the web and their plate surfaces are substantially perpendicular to the web surface. To the right side of the right opening on one side of the web,
A pair of side short rib plate pieces are slightly separated from the periphery of the right opening, and one of them is inclined approximately 45 ° upward from the vicinity of the center of the web with respect to the longitudinal direction of the beam, and the other side is the web. Welded to the web surface and the inner surface of the upper or lower flange so as to incline approximately 45 ° downward from the vicinity of the center of the beam to the longitudinal direction of the beam and make their plate surfaces substantially perpendicular to the web surface. A substantially X-shaped central rib body is formed in a portion between the left and right openings on the other side of the web in the same manner as described above, and a left portion of the left opening on the other side of the web and a right portion of the right opening on the other side of the web. Welding a pair of side short rib pieces in the same manner as described above.
部分に二つの大口径の開口が間隔をおいて近接して形成
されたＨ形断面の鋼製梁の製造法において、鋼製梁に溶
接するリブ板片として中央長リブ板片及び側方く字形リ
ブ板片を用い、中央長リブ板片はウェブに沿って梁の長
手方向に対して略４５゜傾斜して上下フランジ間に延在
できるように鋼板で形成され、側方く字形リブ板片はそ
の二つの辺がウェブの中央部から梁の長手方向に対して
略４５゜傾斜してフランジの内側面にわたって延在でき
るように鋼板で形成され、その一方の対角線がウェブの
中央を通る梁の長手方向の線に一致し、その他方の対角
線が梁の長手方向に対して直角な線に一致する四角形の
４隅部を円弧にした略四角の開口又は前記四角形の内接
円と略等しい円形の開口をウェブに梁の長手方向に間隔
をおいて左と右の二つ設け、ウェブの一側の左右の開口
の間の部分に、第１中央長リブ板片を、左右の開口の周
縁部から少々離して、それが左が上で右が下になって梁
の長手方向に対して略４５゜傾斜しかつその板面がウェ
ブ面に対して略直角になるように、ウェブ面及び上下フ
ランジの内側面に溶接し、ウェブの一側の左の開口の左
側の部分に、側方く字形リブ板片を、左の開口の左側の
周縁部から少々離して、その一方の辺がウェブの中央部
から梁の長手方向に対して略４５゜上方に傾斜しその他
方の辺がウェブの中央部から梁の長手方向に対して略４
５゜下方に傾斜しかつそれらの板面がウェブ面に対して
略直角になるように、ウェブ面及び上下フランジの内側
面に溶接し、ウェブの他側の左右の開口の間の部分に、
第２中央長リブ板片を、左右の開口の周縁部から少々離
して、これが右が上で左が下になって梁の長手方向に対
して略４５゜傾斜しかつその板面がウェブ面に対して略
直角になるように、ウェブ面及び上下フランジの内側面
に溶接し、ウェブの他側の右の開口の右側の部分に、側
方く字形リブ板片を、右の開口の右側の周縁部から少々
離して、その一方の辺がウェブの中央部から梁の長手方
向に対して略４５゜上方に傾斜しその他方の辺がウェブ
の中央部から梁の長手方向に対して略４５゜下方に傾斜
しかつそれらの板面がウェブ面に対して略直角になるよ
うに、ウェブ面及び上下フランジの内側面に溶接し、前
記第１中央長リブ板片と前記第２中央長リブ板片とがウ
ェブを挟んで交差して略Ｘ字型の中央リブ体を形成する
ことを特徴とする大口径の開口のある梁の製造法。3. A includes a web and pair of flanges, in the production method of the steel beams H-shaped cross section having an opening formed proximate apart two large diameter to a portion of the web, to a steel beam Dissolution
The center long rib plate and the side ribs
Using Bed plate piece, the central length rib plate pieces is formed of a steel plate so that it can extend between the upper and lower flanges inclined approximately 45 degrees relative to the longitudinal direction of the beam along the web, the side rather shaped rib plate piece is formed of a steel plate so that it can extend What two sides of its <br/> is I the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam from the center of the web, while The diagonal of the web
Coincides with the longitudinal line of the beam passing through the center, the other diagonal
A square whose line matches a line perpendicular to the longitudinal direction of the beam
A substantially square opening with four corners arced or an inscribed square
A circular opening approximately equal to the circle is spaced in the longitudinal direction of the beam on the web
The left and right sides of the web are slightly separated from the peripheral portions of the left and right openings at the portion between the left and right openings on one side of the web. The right side of the web is inclined downward by approximately 45 ° with respect to the longitudinal direction of the beam and the plate surface is substantially perpendicular to the web surface. On the left side of the left opening on one side, place the side-shaped rib plate piece a little away from the left peripheral edge of the left opening, one side of which is from the center of the web to the longitudinal direction of the beam. And the other side is approximately 4 degrees from the center of the web to the longitudinal direction of the beam.
5 ° Weld the web surface and the inner surfaces of the upper and lower flanges so that they are inclined downward and their plate surfaces are substantially perpendicular to the web surface, and at the portion between the left and right openings on the other side of the web,
The second central long rib plate piece is slightly separated from the periphery of the left and right openings, and is inclined at approximately 45 ° with respect to the longitudinal direction of the beam, with the right side up and the left side down, and the plate surface is the web surface. To the web surface and the inner surfaces of the upper and lower flanges so as to be substantially perpendicular to the right side of the right opening on the other side of the web. A little away from the edge of the web, one side of which is inclined approximately 45 ° upward from the center of the web with respect to the longitudinal direction of the beam, and the other side is substantially away from the center of the web with respect to the longitudinal direction of the beam. The first center length rib plate and the second center length are welded to the web surface and the inner side surfaces of the upper and lower flanges so as to be inclined downward by 45 ° and their plate surfaces are substantially perpendicular to the web surface. The rib plate piece intersects across the web to form a substantially X-shaped central rib body. Preparation of the beam with the opening of the bore.
部分に二つの大口径の開口が間隔をおいて近接して形成
されたＨ形断面の鋼製梁の製造法において、鋼製梁に溶
接するリブ板片として中央長リブ板片及び側方短リブ板
片を用い、中央長リブ板片はウェブに沿って梁の長手方
向に対して略４５゜傾斜して上下フランジ間に延在でき
るように鋼板で形成され、側方短リブ板片はウェブの中
央部の近傍から梁の長手方向に対して略４５゜傾斜して
フランジの内側面にわたって延在できるように鋼板で形
成され、その一方の対角線がウェブの中央を通る梁の長
手方向の線に一致し、その他方の対角線が梁の長手方向
に対して直角な線に一致する四角形の４隅部を円弧にし
た略四角の開口又は前記四角形の内接円と略等しい円形
の開口をウェブに梁の長手方向に間隔をおいて左と右の
二つ設け、ウェブの一側の左右の開口の間の部分に、第
１中央長リブ板片を、左右の開口の周縁部から少々離し
て、これが左上で右下になるように梁の長手方向に対し
て略４５゜傾斜しかつその板面がウェブ面に対して略直
角になるように、ウェブ面及び上下フランジの内側面に
溶接し、ウェブの一側の左の開口の左側の下半分の部分
に、側方短リブ板片を、左の開口の左側の周縁部から少
々離して、ウェブの中央部の近傍から第１中央長リブ板
片と平行に梁の長手方向に対して略４５゜下方に傾斜し
かつその板面がウェブ面に対して略直角になるように、
ウェブ面及び下フランジの内側面に溶接し、ウェブの一
側の右の開口の右側の上半分の部分に、側方短リブ板片
を、右の開口の右側の周縁部から少々離して、ウェブの
中央部の近傍から第１中央長リブ板片と平行に梁の長手
方向に対して略４５゜上方に傾斜しかつその板面がウェ
ブ面に対して略直角になるように、ウェブ面及び上フラ
ンジの内側面に溶接し、ウェブの他側の左右の開口の間
の部分に、第２中央長リブ板片を、左右の開口の周縁部
から少々離して、これが右が上で左が下になって梁の長
手方向に対して略４５゜傾斜しかつその板面がウェブ面
に対して略直角になるように、ウェブ面及び上下フラン
ジの内側面に溶接し、ウェブの他側の左の開口の左側の
上半分の部分に、側方短リブ板片を、左の開口の左側の
周縁部から少々離して、ウェブの中央部の近傍から第２
中央長リブ板片と平行に梁の長手方向に対して略４５゜
上方に傾斜しかつその板面がウェブ面に対して略直角に
なるように、ウェブ面及び上フランジの内側面に溶接
し、ウェブの他側の右の開口の右側の下半分の部分に、
側方短リブ板片を、右の開口の右側の周縁部から少々離
して、ウェブの中央部の近傍から第２中央長リブ体と平
行に梁の長手方向に対して略４５゜下方に傾斜しかつそ
の板面がウェブ面に対して略直角になるように、ウェブ
面及び下フランジの内側面に溶接し、前記第１中央長リ
ブ板片と前記第２中央長リブ板片とがウェブを挟んで交
差して略Ｘ字型の中央リブ体を形成することを特徴とす
る大口径の開口のある梁の製造法。4. A includes a web and pair of flanges, in the production method of the steel beams H-shaped cross section having an opening formed proximate apart two large diameter to a portion of the web, to a steel beam Dissolution
Center long rib plate and side short rib plate as contacting rib plate
Using single, central length rib plate pieces is formed of a steel plate so that it can extend between the upper and lower flanges inclined approximately 45 degrees relative to the longitudinal direction of the beam along the web, the lateral short rib plate piece of the web inclined approximately 45 degrees relative to the longitudinal direction of the beam from the vicinity of the central portion is formed of a steel plate so that it can extend I was I the inner surface of the flange, the length of the beam while the diagonal through the center of the web
Match the line in the hand direction, the other diagonal is the longitudinal direction of the beam
Arcs at the four corners of the rectangle that matches the line perpendicular to
A substantially square opening or a circle approximately equal to the square inscribed circle
The left and right openings on the web are spaced in the longitudinal direction of the beam
In the portion between the left and right openings on one side of the web, the first central long rib plate piece is slightly separated from the peripheral portions of the left and right openings, and the length of the beam is set so that it is at the upper left and lower right. Welded to the web surface and the inner surfaces of the upper and lower flanges so as to incline approximately 45 ° with respect to the direction and the plate surface is substantially perpendicular to the web surface, In the half part, the side short rib plate piece is slightly separated from the left peripheral edge of the left opening, and from the vicinity of the center of the web in the longitudinal direction of the beam in parallel with the first central long rib plate piece. So that it inclines approximately 45 ° downward and its plate surface is substantially perpendicular to the web surface,
Welded to the web surface and the inner surface of the lower flange, and in the upper half of the right side of the right opening on one side of the web, a short side rib plate piece was slightly separated from the right peripheral portion of the right opening, The web surface is inclined from the vicinity of the central portion of the web in a direction substantially parallel to the first central long rib plate piece by about 45 ° with respect to the longitudinal direction of the beam, and the plate surface is substantially perpendicular to the web surface. And the second central long rib plate piece is slightly welded to the left and right openings on the other side of the web at the portion between the left and right openings on the other side of the web, and Is welded to the web surface and the inner surface of the upper and lower flanges so that the lower surface is inclined at approximately 45 ° with respect to the longitudinal direction of the beam and the plate surface is substantially perpendicular to the web surface. In the upper half of the left side of the left opening, slightly separate the side short rib plate piece from the left edge of the left opening. Te, first from the vicinity of the central portion of the web 2
Welded to the web surface and the inner surface of the upper flange so as to incline approximately 45 ° upward with respect to the longitudinal direction of the beam in parallel with the central long rib plate and to make the plate surface substantially perpendicular to the web surface. , In the lower half of the right side of the right opening on the other side of the web,
The side short rib plate piece is slightly separated from the right peripheral portion of the right opening, and is inclined approximately 45 ° downward from the vicinity of the central portion of the web in parallel with the second central long rib body with respect to the longitudinal direction of the beam. And welding the web surface and the inner surface of the lower flange so that the plate surface is substantially perpendicular to the web surface, so that the first central long rib plate piece and the second central long rib plate piece And forming a substantially X-shaped central rib body by intersecting with each other.
ェブとを備え、ウェブの部分に二つの大口径の開口を近
接して形成したＨ形断面の鋼製梁の製造法において、鋼
製梁に溶接するリブ板片として中央短リブ板片及び側方
短リブ板片を用い、中央短リブ板片はフランジの中央部
の近傍から梁の長手方向に対して略４５゜傾斜してフラ
ンジの内側面にわたって延在できるように鋼板で形成さ
れ、側方短リブ板片はウェブの中央部の近傍から梁の長
手方向に対して略４５゜傾斜してフランジの内側面にわ
たって延在できるように鋼板で形成され、その一方の対
角線がウェブの中央を通る梁の長手方向の線に一致し、
その他方の対角線が梁の長手方向に対して直角な線に一
致する四角形の４隅部を円弧にした略四角の開口又は前
記四角形の内接円と略等しい円形の開口をウェブに梁の
長手方向に間隔をおいて左と右の二つ設け、ウェブの一
側の左右の開口の間の部分に、４つの中央短リブ板片
を、左右の開口の周縁部から少々離して、それらの一端
がウェブの中央で互いに少々離れて梁の長手方向に対し
て略４５゜上方又は下方に傾斜して放射状になりかつそ
の板面がウェブ面に対して略直角になるように、ウェブ
面及び上又は下フランジの内側面に溶接して、中央が欠
けた略Ｘ字型の中央リブ体を形成し、ウェブの一側の左
の開口の左側の部分に、１対の側方短リブ板片を、左の
開口の周縁部から少々離して、その一方がウェブの中央
部の近傍から梁の長手方向に対して略４５゜上方に傾斜
しその他方がウェブの中央部の近傍から梁の長手方向に
対して略４５゜下方に傾斜しかつそれらの板面がウェブ
面に対して略直角になるように、その一方をウェブ面及
び上フランジの内側面に溶接し、その他方をウェブ面及
び下フランジの内側面に溶接し、ウェブの一側の右の開
口の右側の部分に、１対の側方短リブ板片を、右の開口
の周縁部から少々離して、その一方がウェブの中央部の
近傍から梁の長手方向に対して略４５゜上方に傾斜しそ
の他方がウェブの中央部の近傍から梁の長手方向に対し
て略４５゜下方に傾斜しかつそれらの板面がウェブ面に
対して略直角になるように、その一方をウェブ面及び上
フランジの内側面に溶接し、その他方をウェブ面及び下
フランジの内側面に溶接し、ウェブの他側の左右の開口
の間の部分に前記と同じやり方で中央が欠けた略Ｘ字型
の中央リブ体を形成し、ウェブの他側の左の開口の左側
及び右の開口の右側の部分に前記と同じやり方で１対の
側方短リブ板片を溶接することを特徴とする大口径の開
口のある梁の製造法。5. a web connecting the upper and lower flanges upper and lower flanges, in the production method of the steel beams H-shaped cross section formed proximate the opening of the two large diameter to a portion of the web, steel
Central short rib plate and side ribs as rib plate to be welded to beam
Using short rib plate piece, a central short rib plate pieces is formed of a steel plate so that it can extend over the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam from the vicinity of the central portion of the flange
The side short rib plate is inclined approximately 45 ° with respect to the longitudinal direction of the beam from the vicinity of the central portion of the web, and spreads on the inner surface of the flange.
Is formed of a steel plate so that it can extend I was, while pairs
The square line coincides with the longitudinal line of the beam passing through the center of the web,
The other diagonal should be perpendicular to the longitudinal direction of the beam.
A square opening or front with the four corners of a matching square arc-shaped
A circular opening approximately equal to the square inscribed circle
Left and right two provided at intervals in the longitudinal direction , four central short rib plate pieces at a portion between the left and right openings on one side of the web, slightly separated from the peripheral edge of the left and right openings, The ends of the web are slightly distant from each other at the center of the web and are inclined approximately 45 ° upward or downward with respect to the longitudinal direction of the beam so as to be radial and their plate surfaces are substantially perpendicular to the web surface. And welding to the inner surface of the upper or lower flange to form a substantially X-shaped central rib body having a chipped center, and a pair of side short ribs on the left side of the left opening on one side of the web. The plate piece is slightly separated from the periphery of the left opening, one of which is inclined approximately 45 ° upward in the longitudinal direction of the beam from near the center of the web and the other is the beam from near the center of the web. About 45 ° downward with respect to the longitudinal direction of the web and their plate surfaces are substantially perpendicular to the web surface. So that one of them is welded to the web surface and the inner surface of the upper flange, and the other is welded to the web surface and the inner surface of the lower flange. The side short rib plate piece is slightly separated from the periphery of the right opening, one of which is inclined approximately 45 ° upward from the vicinity of the center portion of the web with respect to the longitudinal direction of the beam, and the other side is the center of the web. One of them is welded to the web surface and the inner surface of the upper flange so that they are inclined approximately 45 ° downward with respect to the longitudinal direction of the beam from the vicinity of the portion and their plate surfaces are substantially perpendicular to the web surface. The other side is welded to the web surface and the inner surface of the lower flange, and a substantially X-shaped central rib body having a center chipped in the same manner as described above is formed in a portion between the left and right openings on the other side of the web, Same as above on the left side of the left opening on the other side of the web and on the right side of the right opening. Preparation of the beam with the opening of a large diameter, characterized in that welding the lateral short rib plate piece pair in a manner.
ェブとを備え、ウェブの部分に二つの大口径の開口を近
接して形成したＨ形断面の鋼製梁の製造法において、鋼
製梁に溶接するリブ板片として中央長リブ板片及び中央
短リブ板片を用い、この中央長リブ板片はウェブに沿っ
て梁の長手方向に対して略４５゜傾斜して上下フランジ
間に延在できるように鋼板で形成され、中央短リブ板片
はウェブの略中央から梁の長手方向に対して略４５゜傾
斜してフランジの内側面にわたって延在できるように鋼
板で形成され、円形の開口を梁のウェブにその長手方向
に間隔をおいて左と右の二つ設け、ウェブの一側の左右
の開口の間の部分に、中央長リブ板片を、左右の開口の
周縁部から少々離して、これが梁の長手方向に対して略
４５゜傾斜しかつその板面がウェブ面に対して略直角に
なるように、ウェブ面及び上下フランジの内側面に溶接
し、１対の中央短リブ板片を、左右の開口の周縁部から
少々離して、前記中央長リブ板片の中央の上側及び下側
から梁の長手方向に対して略４５゜上方及び下方に傾斜
しかつそれらの板面がウェブ面に対して略直角になるよ
うに、中央長リブ板片、ウェブ面及び上又は下フランジ
の内側面に溶接して略Ｘ字型の中央リブ体を形成し、ウ
ェブの他側の左右の開口の間の部分に、前記と同じやり
方で略Ｘ字型の中央リブ体を形成することを特徴とする
大口径の開口のある梁の製造法。6. a web connecting the upper and lower flanges upper and lower flanges, in the production method of the steel beams H-shaped cross section formed proximate the opening of the two large diameter to a portion of the web, steel
The center long rib plate and the center as the rib plate to be welded to the beam
Using short rib plate piece, the central length rib plate pieces is formed of a steel plate so that it can extend between the upper and lower flanges inclined approximately 45 degrees relative to the longitudinal direction of the beam along the web, the center short rib plate piece
Is formed of a steel plate so that it can extend I was I the inner surface of the flange is inclined approximately 45 degrees relative to the longitudinal direction of the beam from substantially the center of the web, the longitudinal direction a circular opening in the beam web
The left and right sides of the web are provided at intervals, and a central long rib plate piece is slightly separated from the peripheral edge of the left and right openings in the portion between the left and right openings on one side of the web. To the web surface and the inner surfaces of the upper and lower flanges so that the plate surface is substantially perpendicular to the web surface. A little away from the peripheral edge of the center long rib plate piece, it is inclined approximately 45 ° upward and downward with respect to the longitudinal direction of the beam from the upper and lower sides of the center of the central long rib plate piece, and their plate surfaces are substantially inclined with respect to the web surface. A central rib body is welded to the central long rib plate piece, the web surface and the inner surface of the upper or lower flange so as to form a substantially X-shaped central rib body, and a portion between the left and right openings on the other side of the web. In addition, a substantially X-shaped central rib body is formed in the same manner as described above. The process of the beam.
ェブとを備え、ウェブの部分に二つの大口径の開口を近
接して形成したＨ形鋼梁の製造法において、Ｈ形鋼梁に
溶接するリブ板片の前記梁のウェブとフランジとの結合
部分の円弧状部分に対向する角部に切欠き部を形成する
ことを特徴とする請求項１〜６のいずれか一つの項記載
の大口径の開口のあるＨ形鋼梁の製造法。7. a web connecting the upper and lower flanges upper and lower flanges, in the production process of the H-shaped steel beam formed adjacent the opening of the two large diameter to a portion of the web, the H-shaped steel beam
The notch part is formed in the corner which opposes the arc-shaped part of the connection part of the said web of a rib plate piece and a flange of a rib plate piece to be welded, The Claims any one of Claims 1-6 characterized by the above-mentioned. Manufacturing method of H-beam with large diameter opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173039A JP3018118B2 (en) | 1991-06-18 | 1991-06-18 | Manufacturing method of beam with large diameter opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173039A JP3018118B2 (en) | 1991-06-18 | 1991-06-18 | Manufacturing method of beam with large diameter opening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0693683A JPH0693683A (en) | 1994-04-05 |
| JP3018118B2 true JP3018118B2 (en) | 2000-03-13 |
Family
ID=15953075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3173039A Expired - Fee Related JP3018118B2 (en) | 1991-06-18 | 1991-06-18 | Manufacturing method of beam with large diameter opening |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3018118B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4052464B2 (en) * | 2003-06-30 | 2008-02-27 | 日鐵住金建材株式会社 | Reinforcement structure of the side wall opening of metal tube strut |
| JP2008019708A (en) * | 2007-09-19 | 2008-01-31 | Nippon Steel & Sumikin Metal Products Co Ltd | Reinforcing structure of side wall opening part of metallic pipe column |
| US8793831B2 (en) * | 2010-02-12 | 2014-08-05 | Kao Corporation | Cleaning device |
| WO2014041632A1 (en) * | 2012-09-12 | 2014-03-20 | 中国電力株式会社 | Structure for reinforcing opening in steel frame |
-
1991
- 1991-06-18 JP JP3173039A patent/JP3018118B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0693683A (en) | 1994-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3018118B2 (en) | Manufacturing method of beam with large diameter opening | |
| JP2008174980A (en) | Three-dimensional skeleton truss structure | |
| JP2004169298A (en) | Joint structure of column and beam and method for joining column and beam | |
| JP2841082B2 (en) | Beams with large-diameter apertures and methods of manufacturing the same | |
| JP2003027590A (en) | Structure for connection part between column and beam in building | |
| JP2699101B2 (en) | Beam with opening and method of manufacturing the same | |
| JP3284877B2 (en) | Joint structure of square steel tubular column and H-section beam | |
| JP2699102B2 (en) | Beam with opening and method of manufacturing the same | |
| JP2001317159A (en) | Reinforced structure of opening part of steel beam | |
| JP2000319988A (en) | Joining structure of column and beam | |
| JPH06288033A (en) | Steel member for building construction | |
| JP2007046346A (en) | Steel segment and steel segment producing method | |
| JP2020056205A (en) | Steel beam reinforcement metal fitting and steel beam reinforcement structure | |
| JP3295007B2 (en) | Joint structure of space truss | |
| KR102571669B1 (en) | A steel box member with a web of thin steel plate using an anti-buckling plate | |
| JPH08333808A (en) | Post beam joint structure of steel pipe concrete post | |
| JP6319471B1 (en) | Building structure | |
| JP4087750B2 (en) | Framework composition and connecting means thereof | |
| JP7334385B2 (en) | Unit building ceiling structure | |
| JPH1193259A (en) | Joining structure of pillar/beam of building and building having the same | |
| CN212001911U (en) | Novel steel structure | |
| JP6692468B2 (en) | Steel pipe columns and convex members for welding and joining steel pipe columns | |
| JP7432299B2 (en) | frame structure | |
| JP2528536B2 (en) | Corner column / wall structure | |
| JP3170702B2 (en) | Rigid joint single layer lattice shell joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090107 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100107 Year of fee payment: 10 |
|
| LAPS | Cancellation because of no payment of annual fees |